How do you calculate due date from conception? If you know when you conceived, our pregnancy calculator calculates your due date by adding 38 weeks to the date of conception. This method of calculation may be more accurate than a LMP due date calculation if you have irregular or consistently longer or shorter cycles than 28 days Due date is the estimated date of delivery calculated by two methods, using last menstrual period and other one is using conception date. LMP Method: Using LMP method, you can calculate the due date by adding 40 weeks to first day of your last menstrual period. i.e (Due Date = LMP* + 280 days) *LMP - First day of last menstrual period The Pregnancy Conception Calculator estimates the date of conception based on the expected due date of the pregnancy, last period date, or ultrasound date. The date of conception is the day on which a person's baby is conceived. The calculator also estimates a possible range of days during which sexual intercourse might have led to conception based on sperm being viable for 3-5 days within a woman's body Your due date is calculated by adding 280 days (40 weeks) to the first day of your last menstrual period (assuming a 28 day cycle). Note that your menstrual period and ovulation are counted as the first two weeks of pregnancy. If you deliver on your due date, your baby is actually only 38 weeks old, not 40. Your due date is only an estimat

Conception date calculation. We assume that the estimated due date is 40 weeks from the first day of the last period in your pregnancy calculation and that the conception occurs two weeks into your menstrual cycle. The formula: Conception date = due date - 40 weeks + 14 days. Reference: Naegele's rule ** Calculate a conception date based on your due date**, a DOB or your last menstrual period Reverse Due Date Calculator. Determines the conception date from the estimated due date or from last period to find out when a baby was conceived or when to try for a baby with a particular birth date

If you are trying to calculate the approximate conception date based on your due date you would take your due date and subtract 266 days. This would bring you back to your rough conception date. Calculating Based on your LMP. With regards to the Last Menstrual Period or the LMP, it is pretty straightforward to calculate * A conception calculator estimates the day you had sex which led to pregnancy and also due date of arrival of your baby*. In case a woman had sex with multiple partners she can find out the father of the child. You have to add 266 days to the first day of the last menstrual period

Most pregnancies last around 40 weeks (or 38 weeks from conception), so typically the best way to estimate your due date is to count 40 weeks, or 280 days, from the first day of your last menstrual period (LMP). Another way to do it is to subtract three months from the first day of your last period and add seven days The babyMed due date calculator is the most precise pregnancy calculator online. Just input your dates above and find your due date right now. Get our Childbirth Course to plan for your big day including how to identify true labor, pain relief, natural birth options and more! How many weeks am I and why is it important Based on the calculation above, your canine will be delivering within 63 days. The estimated due date is 63 days from the first mating, which is the length of gestation in canines. The expected dates indicate the earliest and latest expected dates of delivery. Dates may vary in some instances

Pregnancy Due Date Calculator; Ovulation Calendar; About. Donate To Make Motherhood a Healthy Reality. Your Gift; Corporate Sponsors ; Contact. Partner With Us; Home; Resources; Pregnancy Due Date Calculator Pregnancy Due Date Calculator This page presented by . Pregnancy Calendar and Due Date Calculator Calculate Based On: First Day of Last Menstrual Period* Average Length of Cycles From. Conception date helps to know their due date which is very helpful. Because doctors can take better decisions about the baby if the due date is known. Most commonly the estimated due date calculated by adding 280 days with the first day of the last menstrual period The estimated due date (EDD or EDC) is the date that spontaneous onset of labor is expected to occur. The due date may be estimated by adding 280 days (9 months and 7 days) to the first day of the last menstrual period (LMP). This is the method used by pregnancy wheels To find your due date, enter the date of the first day of your last period, and click 'show your due date' - the calculator will do the rest. Pregnancy normally lasts from 37 weeks to 42 weeks from the first day of your last period. As part of your pregnancy (antenatal) care, your midwife will offer you a dating scan that will give you a more.

Simply select your birthday (or due date if you were born premature or late) and click the Calculate Conception Date button. Note that if you want to calculate what date your baby is due to be born on (EDD), please visit the Pregnancy Due Date Predictor -- which also includes How to Calculate Due Date based on Naegele's Rule Due Date Calculator Most pregnancies last around 38 weeks from conception. Typically women ovulate about two weeks after their menstrual cycle starts, so the best way to estimate your due date is to count 40 weeks, or 280 days, from the first day of your last menstrual period

Conception Calculator estimates probable conception dates from Birth, LMP and Due dates. These are probable conception dates based on an average 28 day cycle Pregnancy calculator. A pregnancy calculator being is used to discover that how many months and weeks are left for the birth or delivery of your baby. Mostly women used the pregnancy calculator these days which will be very much helpful for them.. what is Due date calculator. Most of the time the pregnancies last from the 40 weeks which are 280 days, from the last day of your final period due.

- Since the exact date of conception is seldom known, the date of the mother's last period is often used to begin calculating when the baby is due. The normal due date is 40 weeks after the first day of the last menstrual period. Another way to calculate the pregnancy due date is from conception, if known. Since ovulation and conception usually.
- Use these three simple steps to find out how far along you are in your pregnancy: 1. Figure out when was the first day of your last period or the exact day you conceived. 2
- Calculating Conception Date In a Typical Pregnancy For a woman with a regular period, conception typically occurs about 11-21 days after the first day of the last period. Most women do not know the exact date of conception because it can be challenging to know exactly when ovulation occurs
- Due Date from Ultrasound Report: Home > Calculators > Calculate Due Date from Ultrasound Report. Enter Date Ultrasound was Performed Enter the Calculated Gestational Age on the Date Ultrasound was Performed weeks days Calculate Due Date or Gestational Age Using Dates. All calculations must be confirmed before use. The suggested results are not a substitute for clinical judgment. Neither.

Calculating the **due** **date** **from** the **date** of **conception** can actually be put into a formula based on the last menstrual period before you became pregnant. Calcul.. That's why your due date is calculated based on the date of your last period instead. Most people will ovulate about two weeks before the first day of their period, and conceive shortly afterwards. The average pregnancy lasts between 37 weeks and 42 weeks. Our calculator uses this information to give you an estimated due date As soon as you get a positive pregnancy test, the first thing you probably want to do is type conception calculator or When did I conceive? into Google.And if you do, you'll find loads of online calculators that promise to give you your conception date. But the truth is that online calculators (which use formulas) will only give you an estimate of your conception date #1 Calculating Due Date From Your Last Period Date. Taking note of the first day of your last menstrual period (LMP) is crucial for estimating the due date. Given that the pregnancy lasts 280 days, if we have the first day of our last period, we can use simple addition to calculate the due date as well. It's essential to take into account that although most pregnancies last 40 weeks, they. Due Date Calculator. Most pregnancies last around 38 weeks from conception. Typically women ovulate about two weeks after their menstrual cycle starts, so the best way to estimate your due date is to count 40 weeks, or 280 days, from the first day of your last menstrual period. Another way to do it is to subtract three months from the first day of.

- The expected date of delivery (EDD) and estimated conception date computed by this calculator are for informational purposes only and by no means shall be used as the exact dates for these events. For more accurate dates, please consult a doctor or your personal physician. Please note: only about 5% of babies are born on their actual due dates. While mothers typically carry their unborn babies.
- Pregnancy normally lasts from 37 to 42 weeks from the first day of your last period. To find your due date, enter the date of the first day of your last period, and click 'calculate' - the calculator will do the rest. First Day of Last Menstrual Period Average Length of Cycle
- Conception only happens about two weeks after your period starts. Nevertheless, once you have fallen pregnant, your doctor will calculate your expected due date from the first day of your last normal menstrual cycle. Your due date calculator week and dayswork on the basis that you will be pregnant for 40 weeks
- Information Needed to Calculate Your Due Date Include: Conception date The first day of the last period Ultrasound results IVF transfer date (in case of an IVF conception
- g about it).. Use the pregnancy due date calculator below to estimate your due date as well as conception date and fetal age. Just remember that the estimated due date is just that - an estimation
- This free conception calculator estimates possible as well as most likely dates of conception, and their corresponding due dates over six menstrual cycles. Learn more about the fertility window, and explore hundreds of other calculators addressing topics such as pregnancy, health, fitness, finance, and math, among others
- Conception Calculator Calculate Baby Conception Date When was I conceived? When was my baby conceived

The conception date is when a sexual intercourse takes place and it is situated at a range of a few days before and after the ovulation date. The conception calculator determines the probable conception date in two different cases: ■ Based on a known date of birth Calculate Due Date From Conception. 7 Strategies To Parents For Day Night time It is quick to tumble into a rut as a couple when the young ones come together. If you are on the lookout for a few new strategies for date nights to spice things up, right here are some terrific kinds. Calculate Due Date From Conception. Calculate Due Date From. Method 1: Due date by last menstrual period 1. Naegele's rule. This is the standard method of calculating a due date for a pregnancy. Flo also uses Naegele's rule... 2. Mittendorf-Williams rule. The Mittendorf-Williams rule is considered more advanced than Naegele's rule, because the... 3. Parikh's.

* Our due date calculator is a fun tool to use straight after your positive pregnancy test result*. Answer two questions and it will estimate your baby's delivery

- g of ovulation and fertilization, but for the purposes of estimation, it is reasonable to assume that.
- It will be the first day of your last period, pregnancies last for a duration of 40 weeks from the time you conceived, the best way to calculate your due date is to count 280days of 40 weeks from the first day of your last menstrual period (LMP)
- Want to know your due date and even the date of conception? Just by entering the 1st day of your last menstrual cycle our pregnancy/due date calculator can tell you conception date, due date, first and second trimester dates and also tell you how pregnant you are (gestational age). To calculate your fertile phases, visit the ovulation calculator
- Using a reverse due date calculator can help you estimate when your baby was conceived. This is especially accurate if you have a regular 28-day menstrual cycle. Women undergo so many physiological and psychological changes during and after gestation. It's important to pay attention to symptoms so you can reduce stress throughout and after your pregnancy
- es the estimated gestational age of an embryo or fetus by taking biometric measurements. Usually, this involves measuring the crown-rump length (CRL) of the embryo or fetus
- Given this method of calculation, your pregnancy is measured in what is termed gestational weeks, as opposed to being measured from the actual day of conception. Counting from the first day of.

How To Calculate Baby Due Date From Conception Date Signs or symptoms and Heal for Toddler Diaper Rashes Infants typically go through from diaper rashes. This can be agonizing and treating a infant with these types of significant ache can be one more tough matter to do. Some straightforward suggestions can support you overcome infant diaper rashes and can also avert them from happening. She tested positive via home test last night, and is wanting to calculate when her due date would be. Because her periods are not regular, she doesn't remember when her last menstrual period was but knows the exact date when she had sex. Are there any due date calculators you recommend that go off of the date of intercourse? Add Friend Ignore. That girl Amber +2 2 kids; California 6981 posts. Due date calculator. Use this calculator to find your due date. This is just an estimate - not a guarantee! Most women, but not all, will deliver their babies within a week on either side of this date. Calculate Forward Calculate Backward. The first day of your last menstrual period was: Select your month. Select your day. Select your year. Your estimated due date is: Select your month. ** This conception calculator will only ask you to input the length of the menstrual cycle and the date of the first day of the last period in order to discover this date for you**. Example conception calculation and result. For instance, someone born on January 24 th 1980 is likely to have been conceived around May 3 rd 1979. Or a pregnant woman.

Conception, the fertilization of the egg by the sperm usually happens 266 days before the due date and the due date is calculated 266 days after ovulation conception and fertilization. The last menstrual period usually happens about 14 days before ovulation, so the due date is calculated 280 days after the first day of the last menstrual period Calculations: Estimated Due Date: Thur 2022/2/17 Estimated Conception Date: Thur 2021/5/27 Estimated Pregnancy Week: -10 weeks -3 days This result is an estimate only.It can be hard to predict the exact date. Only 5 percent of babies are born on their due dates. Due to the fact that most babys are born within 2 weeks of the date. Pregnancy Due Date

How Long is Pregnancy? When calculating an estimated due date, pregnancy is estimated to be 40 weeks or 280 days from the first day of a woman's last menstrual period (LMP). When calculating a due date from conception, pregnancy is estimated to be 38 weeks or 266 days from conception. Actual Length of Pregnanc * How accurate is the due date? The pregnancy calculator gives you an approximate due date, which it works out your due date by adding 280 days (40 weeks) to the first day of your last menstrual period (assuming a 28 day cycle, it is adjusted for longer or shorter cycles)*. Your period and ovulation are counted as the first two weeks of pregnancy Pregnancy Calculator: Babies Due Date Calculator. Synopsis: This pregnancy calculator shows due date of your baby and several other interesting dates including date of conception and number of weeks you are pregnant. 1. Author: Disabled World Contact: Disabled World (www.disabled-world.com) Published: 2017-12-21 Updated: 2021-02-2 Conception & Due Date. Wondering when you conceived, or when you could be due? Our Due Date Calculator can help. Simply input the required information below and get an estimate for your conception and due dates immediately. If you need more information or you have questions about pregnancy, parenting, or your options, call Calaveras Pregnancy Center - A Door of Hope at (209) 736-9600. Conception occurs approximately 14 days before the due date of your period, and you can get pregnant even if you make love 5-6 days before ovulation occurs. According to most medical experts, a majority of women experience a menstrual cycle that is 28 days long, which indicates you're ovulation was triggered on day 14. However, if your menstrual cycle runs past by a few days, there are great.

** Hence it is calculated by subtracting 266 days from your estimated due date**. For example, if a woman has a due date of December 8th then December 8 - 8 days in December = 258th day i.e. November 30th. Now 258-30 days in November = 228 i.e. October 31st and so on till the last 14 days remain and this would come around march 15th After you calculate your adjusted LMP date, simply mark it on the pregnancy wheel and then look at the date where the line crosses. That is your estimated due date. Some pregnancy wheels may allow..

How is your due date calculated using this pregnancy calendar? Did you know that on the day your baby is conceived you are already two weeks pregnant??!! It doesn't sound right but that's how gestational weeks are calculated. Most pregnancies last 40 weeks (38 weeks from the actual conception date) Determining the gender of the child by conception date online - free calculators for accurate calculation of the gender of the child by conception date ** Calculate the date of conception**. Like we previously stated, the main index to calculate the conception date is the date of the mother's last menstruation. This calculation allows us to know the gestational age although it doesn't tell us the precise date that conception occurred. A woman who has a regular cycle can allow for more concrete details. However, this can still fail in certain. IVF due date calculator with one baby,twins or triplets, including 3 day and 5 day FET due date calculator Last Updated on December 2, 2020 How long after IVF do you conceive? What is your baby's date of conception Conception date: If conception is known (eg, date of insemination, ovulation or egg retrieval), then the due date can be calculated by adding 266 days. Gestation at a future or past date: Use to calculate gestation in the future or past. First, calculate current gestation using one of the other methods, then go to this section and choose past.

Due Date Calculator. Estimate your baby's delivery date. If you're pregnant, you're probably curious to find out when your baby is due. Just answer the two questions below and let us estimate your most likely due date. When did your last period start? E.g., 01/03/2021 Generally, how long are your cycles? To measure the length of your menstrual cycle, count from the day your period starts to. However, the day of conception is often not known, so the standard for due date calculation works by counting 40 weeks from the first day of the last normal menstrual period (LNMP). Assuming your cycle is 28 days, your baby was only waiting to be conceived in the first 2 weeks of your 40 gestational weeks of pregnancy Due Date Calculator. Congratulations, you're pregnant! Now - when will your new baby arrive? Sources. WebMD Health Tool Reviewed by Brunilda Nazario, MD on January 18, 2017. SOURCES Williams. The important Due Date, possible conception date or weeks and trimester dates, here are a few calculators to help with those: Due Date Calculator: Enter the LMP, Conception or IVF date and you will be shown your Expected Date of Delivery, how many weeks and days pregnant you are. Along with these are links to the week and trimester at this stage of pregnancy

** On this page, newly pregnant moms can calculate the due date or expected date of baby's birth and the current week into pregnancy**. The baby due date is just an estimate since it is difficult to determine the exact date of conception. Enter first day of last period (yyyy-mm-dd): Result window. Android: Use this pregnancy calculator offline with our all-in-one calculator app. Due date. Due Date Calculator Are you pregnant but you're not sure exactly when you are due? You have several options for determining your due date: An ultrasound is the most accurate way to see how far along your pregnancy is. Ultrasounds provide a detailed look at your baby's development and will give you a good estimate[...] Our due date calculator can help determine when you are due to give.

Calculate Due Date From Conception Date. You Could Date On line - Why Not Uncover a Nanny On line, As well? Outrageous tales about Craigslist apart, much more and far more folks are connecting with every single other in significant strategies via online venues these kinds of as courting sites, Facebook neighborhood boards, and other social media networks. These times, occupied dad and mom. To calculate your exact date of conception you'll need to know the start date of your last menstrual period, how many days in your menstrual cycle, or when you ovulated. If you don't have that information, you can work backwards from your due date, with the help of an ultrasound and your health care provider. It's important to remember that 80 percent of babies are born within 2 weeks of their. My estimated conception and due date First day of my last menstrual cycle Conception date from known birth date or due date; Enter the first day of your last menstrual period: Enter your due date: Enter your birth date or due date: Calculate Clear. Results. First Trimester. Second Trimester. Third Trimester . The results you receive from this tool are for informational purposes only and should. Due Date Calculator | FIRST RESPONSE™ Learn when you can expect your little one to arrive. When did your last period begin? Please enter a valid date. What is your average cycle length? days. Start with the first day of one period and count right up to the day before the first day of your next period. Count the first day of bleeding or spotting as day one. The average cycle length is 28 days.

Conception Calculator Based on Due Date 1. Conception Date Calculator 2. Conception Calculator Based on Due Date 3. Conception Calculator Boy or Gir How to Calculate a Due Date With the Woods Method or Nichols Rule; Infants. How to Calculate Date to Conceive by Due Date. Written by Kathryn Rateliff Barr . 18 April, 2017 . The length of pregnancy is approximately 280 days. This is 10 lunar months or 40 weeks. Fewer than 6 percent of babies choose to be born exactly 280 days from their conception. Most babies are born with 10 days or so of. How to use pregnancy due date calculator. Enter the date of the first day of your last menstrual period i.e if your last menstrual period started on the 5th of November 2020, enter the date in the pregnancy due calculator date section and hit the Calculate Your Due Date button and watch as your pregnancy due date gets calculated Pregnancy is counted as being 40 weeks long, so your due date is calculated at 280 days from conception. Don't worry - our tool will do those sums for you, just fill in your info below and the results will show on our calendar. Due Date Calculator So you're having a baby (hurrah!) but when exactly? Early pregnancy isn't the time to be wrestling with calendars, charts and menstrual cycles.

The online pregnancy due date calculator makes use of the LMP or the conception date and the average length of the cycle to calculate the pregnancy due date.. The calculator also tells you how long you have been pregnant and when you are likely to go into labour. Also get to know the trimester you are in to know the growth of your baby Conception could fall anywhere in that time period, depending upon the ovulation date. Reverse Due Date Calculator. If you know your due date and want to know the conception date, this calculator is for you. It is called reverse due date Calculator. The conception date is found by subtracting 266 days (38 weeks), from your due date

Due date calculator from conception. September 30, 2011 Hollywood Stars have mastered the art and science of losing body fat, while keeping muscle doing exactly this, using the proven program which has been used time and time again. Now you have the choice. Are you going to go the next 5 to 10 years losing due gaining weight trying out god knows how many diet conception, programs and formulas. Pregnancy Due Date Calculator By Conception Date. Calculate your pregnancy date and expected delivery date with this FREE calculator. Plus you get additional results of dates to go for various pregnancy tests Ex. 1. NT scan date. 2. Morphology scan date. 3. First foetal heartbeat checkup etc. Try out our pregnancy calculator now and get.

Due date calculator from conception. Posted on September 23, 2011 by fosyjynuny. Hollywood Stars have mastered the art and science of losing body fat, while keeping muscle doing exactly this, using the proven program which has been used time and time again. Now you have the choice. Are you going to go the next 5 to 10 years losing due gaining weight trying out god knows how many diet. How To Calculate Due Date From Conception. How To Calculate Due Date From Conception You Might Day On-line - Why Not Obtain a Nanny On the web, Also? Nuts stories about Craigslist aside, far more and much more people today are connecting with just about every other in meaningful ways by on line venues such as courting web sites, Facebook group boards, and other social media networks Reverse due date calculator to calculate conception date. Boors. Pregnancy calculator: babies due date calculator disabled world. Super mario pc downloads Dressiness. Due date calculator. Due date calculator — amazingly accurate pregnancy calculator. Belly feat snoop dogg - hot girl mp3 free download Due date calculator for ivf and fertility patients — princeton ivf. Hoover Steelworker's. how to calculate due date from conception and ovulation test? 1 doctor answer. Dr. Alan Patterson answered. 42 years experience Obstetrics and Gynecology. Your OB can: Show you on an OB wheel you are due 38 weeks from your conception date if you were having 28 day cycles. Answered on Jun 10, 2014. Send thanks to the doctor . 90,000 U.S. doctors in 147 specialties are here to answer your. To help you get started we created this due date calculator that can be your perfect pregnancy calculator used to calculate the due date. Please mind the fact that our due date calculator is far from an exact science. Not all babies are actually born on this date. Calculate your Due Date

Due Date, Conception Date Calculation Results: Estimated Fertility Dates : to Estimated Conception Date : First Trimester Ends(12 Weeks) : Second Trimester Ends(27 Weeks): Estimated Due Date(40 Weeks) : ©h. How to Know When You Conceived. In general, women can only conceive when they are ovulating - that is, when their ovaries release a new egg into their fallopian tubes for fertilization. How is My Due Date Calculated? First Day of Last Period:. Most pregnancies last around 40 weeks (or 38 weeks from conception). So, the best way to... Conception Date:. Estimating due date entirely based on the first day of your last period cycles for female who have who... IVF Transfer date:. In the.

The primary use of pregnancy calculator would be to determine the due date and compute the conception date that is likely. This tool may also figure out the finish of the first and second trimesters, determine the weeks you've been pregnant, estimate fetal age, calculate the weeks you'll be pregnant on a given date, calculate which date you will end up pregnant the specified number of. There are several key dates at the beginning of your pregnancy that can help you calculate your due date, including the first day of your last menstrual period and the date of conception. But sometimes at the beginning of pregnancy all of the timing seems a bit confusing. So, here's a quick rundown on how the calculations are made A reverse due date calculator or a reverse conception date calculator is a tool by which a pregnant woman can calculate the approximate period of conception if she knows the due date of delivery. With this method, the pregnancy is counted backwards, starting from the expected due date to a time frame when a pregnant woman may have conceived Conception may have occurred on any of dates you had intercourse between day 11 and day 21 of your cycle depending on your date of ovulation. Although you cannot get pregnant unless you are ovulating, sperm can live inside the body for up to five days

This pregnancy due date calculator will give you a rough idea of when your baby should be born. If you know the date of the first day of your last menstrual period (LMP), or have already had your first ultrasound scan, you can use this tool. Please remember that the result will not necessarily be the day that your baby arrives. The actual date may be any time from 38 to 42 weeks in most. Pregnancy > Due Date Calculator. Your due date is August 18, 2021. Congratulations! You are 15 weeks and 4 days pregnant. August. 18. 2021. Recalculate your due date. Medically Reviewed by. Aaron Styer , M.D. on May 18, 2020 . Your Pregnancy Timeline. 1st Trimester. From Nov 11 to Feb 9. 2nd Trimester. From Feb 10 to May 18. 3rd Trimester . From May 19 to Aug 18. Did You Know? Only 1 in 20. You can enter your due date and the conception calculator will calculate possible dates of when you fell pregnant. A pregnancy conception calculator does not only predict when you may have become pregnant, it can also calculate your due date by adding 266 days (38 weeks) to the date of your ovulation or fertilisation. However, in the case of women with a cycle longer than 28 days, the due date. Keep in mind, that just like due dates, conception dates are usually just estimates. You can sometimes pinpoint the exact date that you conceived, but not always. At least knowing your estimated date of conception will give you a better idea of when you conceived. As always, keep in mind that even if you do know your date of conception and your due date, it is no guarantee of when your baby.

In other words, calculating conception based only on your body cycles can be difficult. Intercourse. Another way to learn your conception date is to try to determine the last time you had sexual intercourse. Unfortunately, this method isn't totally accurate either. Conception is a process that takes time and a man's sperm can actually stay. In other words, calculating conception based just on your body cycles can be difficult. You can also simply try to determine the last time you had sexual intercourse, but this method isn't totally accurate either. Conception is a process and takes time, and a man's sperm can actually stay alive inside your body for up to a week after sex. All of these factors can make it hard to know when.

About Due Date Calculator . The Due Date Calculator is used to calculate your due date and find out when your baby is due and other information regarding your pregnancy, based on the first day of your last menstrual period or your conception date With only a few simple clicks our due date calculator is able to estimate when you will give birth. Try it now! logo-pampers-oasis. GET APP. Sign up Log in. PRODUCTS. Products. Newborn (0-3 Months) Baby (3-12 Months) Toddler (12+ Months) Quality And Safety. REWARDS & CODES. What Is Pampers Rewards. Frequently Asked Questions . OFFERS. PREGNANCY. See All Pregnancy. Pregnancy Symptoms Multiples. To help you calculate your due date, simply add seven days to the date of the first day of your last period and then add nine months. So, if your period started on April 1, add seven days (April 8) and then add nine months, which will take you to a due date of January 8. You may find it easier to use our pregnancy due date calculator How are Due Dates Calculated? Dani Kurtz Dec 3, 2015 If you were having regular periods before pregnancy, your doctor will calculate your due date based off of your last menstrual period. This goes back to the fact that in order to get pregnant, your body ovulated—or released an egg—roughly in the middle of your cycle and it was fertilized by sperm. That was the moment of conception..