Find out when my due date is

Pregnancy Due Date Calculator | BabyCenter

Calculation method

When did your last period start?

mm-dd-yyyy

Cycle length

BabyCenter's Due Date Calculator

Use our pregnancy due date calculator by plugging in either the date of your last menstrual cycle or the date you know you conceived. The calculator will do the rest.

How is my due date calculated?

There are several ways your due date is determined. If you happen to know the day you conceived, you can count 38 weeks from that day to find your due date. (Human gestation takes about 38 weeks.)

But very few expectant moms know exactly when they conceived. Even if you only had sex once during your fertile period, you wouldn't conceive on that day unless you happen to be ovulating. Sperm can live for up to five days inside your fallopian tubes. So, it could be up to five days after you have sex that you release an egg (ovulate) and it gets fertilized by a waiting sperm. That's the day you conceive.

So, without knowing the day of conception, how does anyone determine a due date?

First day of your last period

The most common way to calculate your pregnancy due date is by counting 40 weeks from the first day of your last menstrual period (LMP). And that's how most healthcare providers do it.

If your menstrual cycle length is the average length (28-day cycle), your menstrual cycle probably started about two weeks before you conceived. This explains why pregnancies are said to last 40 weeks instead of 38 weeks.

This method doesn't take into account how long your menstrual cycle actually is or when you think you might have conceived. But generally speaking, women typically ovulate about two weeks after their menstrual cycle starts. And women are more likely to know when their last period started than the day they ovulated.

Conception date

If you do happen to know precisely when you conceived – say, if you were using an ovulation predictor kit or tracking your ovulation symptoms – you can calculate your pregnancy due date based on your conception date. Just choose that calculation method from the pulldown above and put in your date.

Note: Again, you don't necessarily conceive on the day you have sex.

IVF transfer date

If you conceived through IVF, you can calculate your due date using your IVF transfer date. If you had a Day 5 embryo transfer, count 261 days from your transfer date. If you had a Day 3 embryo transfer, count 263 days.

Can my due date change?

Your healthcare provider might revise your due date if your baby is measured during a first trimester ultrasound scan and found to be much bigger or smaller than expected for gestational age. This is more likely to happen if you have an irregular menstrual cycle length that makes it hard to pinpoint the date of conception.

Your healthcare provider will measure your baby during that ultrasound exam to figure out how far along your baby is and then provide you with a new due date.

What if I already know my due date?

If you already know your due date, you can use this calculator to see your pregnancy timeline. It will tell you when you'll hit various milestones, and when you may be due for prenatal tests and prenatal visits. You'll also find what your baby's sign and birthstone will probably be and which famous people were born on your due date.

How likely am I to give birth on my due date?

Of course, a due date calculation is always approximate, whether it's from our tool or from your doctor or midwife. Only 1 in 20 women delivers on her due date. You're just as likely to go into labor any day during the two weeks before or after.

Want more information about how the weeks, months, and trimesters of pregnancy are counted? See our pregnancy timing chart.

How soon can I take a pregnancy test?

With all this talk about pregnancy due dates, you may be wondering when you can take a pregnancy test. To ensure you get the most accurate reading, it's best to wait a few days after your missed period to take a pregnancy test.

At-home urine tests measure the amount of hCG (human chorionic gonadotropin) present in your body. If you take a pregnancy test before you miss your period, you may not get an accurate result, despite what some tests advertise.

If you're getting a blood test in your provider's office, you may get results sooner. These tests also measure the amount of hCG in your bloodstream, but they're more sensitive than at-home urine tests. Blood tests may be able to detect pregnancy six to eight days after ovulation.

Read more:

Your pregnancy, week by week
Your first trimester pregnancy checklist
Pregnancy Weight Gain Calculator
Ovulation Calculator
See all tools

BabyCenter Staff

Content that appears under this byline was created by members of the BabyCenter Editorial team.

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My pregnancy week by week

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How to find out the date the subscription fee was charged on Tele2 - Moscow and the region

We tell you how to see the date the subscription fee was charged for your tariff on the website and in the My Tele2 mobile application

October 25, 2019

5 minutes to read

Most Tele2 tariffs involve a subscription fee: this means that once in a set period of time, a certain amount of money is automatically debited from your account. Its size depends on the tariff plan you have chosen and the connected services.

Tariff plans with monthly fee can be divided into two types. The first type is tariffs for which the subscription fee is charged once a month - for example, "My Online", "My Online+", "My Talk". The second type is tariffs with a daily deduction of fees - for example, "Classic".

It is important to know the date when the subscription fee was charged in order to replenish the balance in time and stay in touch.

Of course, not everyone remembers when they connected to Tele2 or changed their tariff. It’s good that you can quickly and conveniently see the date the tariff fee was charged in your personal account on the website and in the My Tele2 (6+) mobile application.

We look at the date of debiting on the site and in the My Tele2 application

An easy way to get information about the account status, connected services or remaining gigabytes is to enter your personal account on the site or in the My Tele2 mobile application.

To log in, just enter your phone number and enter a password. If you have forgotten it or have not registered in your personal account before, you will receive a one-time code to enter SMS.

The date of debiting is indicated on the main screen of your personal account on the website and in the application under the name of your tariff. Here you can also see the balance of funds and understand whether they are enough to charge the subscription fee for the next day or month.

The subscription fee is charged only when you have the required amount on your account. If, when checking the balance, you find that there is not enough money, you can replenish your account directly on the website or in the application - for example, with a bank card or using the Apple Pay and Google Pay payment systems.

Auto payment - for those who do not want to think about the date of charging the fee

The "Auto payment" service will help you not to worry about the date of charging the subscription fee. The balance will be automatically replenished from your card on the specified day or when the account amount drops to a certain threshold. You choose the condition yourself.

Commission for the "Auto payment" service is not charged. You can also set up automatic top-ups for other people.

You can manage the service in your personal account on the website and in the My Tele2 application.

Is it possible to change the charging date

It is impossible to change only the subscription fee charging date. You can change it when changing or setting up a tariff - the date of debiting will be the day when you applied the new setting or switched to a new tariff plan.

If you have any questions, please contact Tele2 support:

in the online chat on the site;
in your personal account on the website and in the mobile application.

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How to correctly calculate the gestational age and determine the date of delivery

For first-time pregnant women, it often comes as a surprise that in obstetrics the gestational age is determined not in months, but in weeks. But the surprises do not end there - the fact is that the obstetric period is calculated not from conception, but from the first day of the last menstruation.

In fact, pregnancy occurs two weeks after the obstetric period, at the time of ovulation, when the sperm meets the egg. Thus, the age of the embryo, or gestational age, differs from the obstetric one by 2 weeks down.

How long does pregnancy last?

The obstetric term of a term pregnancy is 40 weeks, or 280 days. It is on the basis of the obstetric gestational age that the doctor will prescribe tests and examinations for you, determine the date of maternity leave and calculate the EDD (estimated date of birth).

Doctors use the Negele formula to calculate the EDD. According to this formula, if we add nine months and seven days to the first day of the last menstruation, we get the estimated date of birth.

Unfortunately, determining the gestational age from the first day of the last menstrual period is not a very accurate method. It is well suited for women with a stable 28-day cycle, but if your cycle is slightly longer or shorter, then the date of ovulation shifts, respectively, and the actual obstetric gestational age will differ from the established one.

The most accurate calculation of EDD is by adding 266 days to the last ovulation date (if you know it).

How to confirm pregnancy, determine the duration of pregnancy and the date of delivery

By itself, a delay in the start of a new menstrual cycle does not necessarily indicate pregnancy - failures can be explained by diseases, excessive physical exertion or stress. Pregnancy must be confirmed with an hCG test or examination on a gynecological chair.

1) Blood test for hCG

Exceeding the concentration of the "pregnancy hormone" or human chorionic gonadotropin (hCG) in a woman's blood allows diagnosing pregnancy very early, in the first days after its onset, long before there is a delay in menstruation cycle or the woman will feel the first symptoms. Also, an analysis of the level of hCG in the blood allows you to determine the gestational age with an accuracy of about two weeks.

2) Home pregnancy test

Home pregnancy tests also work by measuring hCG levels, but they are less sensitive than blood tests. The most modern of them can not only confirm the presence of pregnancy a few days before the delay, but also indicate (not too accurately) an approximate date.

Tests of the old generation will show a more or less accurate result only after a delay, that is, after 2-4 weeks from conception.

3) Gynecological examination

A qualified gynecologist-obstetrician can diagnose pregnancy during the examination starting from 3-4 weeks after conception, focusing on changes in the shape and size of the uterus, as well as other signs.

4) Ultrasound

Ultrasound is the most accurate way to diagnose pregnancy. With the help of ultrasound with a transvaginal sensor, it is possible to determine the presence of a fetal egg in the uterus already 1-2 weeks after conception (3-4 obstetric weeks), but it is possible to detect fetal heartbeats only for a period of 5-6 obstetric weeks. It is possible to determine the gestational age with high accuracy (up to 2-3 days!) With the help of ultrasound only from 6-7 weeks.

If the delay, as well as the result of an hCG test or blood test, indicate that you will soon become a mother, do not rush to get an ultrasound right away. Wait another 2-3 weeks, then by ultrasound you will not only be accurately determined by the period, but will also be allowed to listen to the baby's heartbeat.

If you did not do an early ultrasound to confirm pregnancy, then for the first time you will encounter this study at the 10-14th week. At the same time, the exact gestational age and PDR will be established or corrected for you. During pregnancy, you will need to undergo such an examination at least twice more. This will happen at 20-24 and 30-34 weeks. However, it is worth saying that ultrasound in the 2nd and 3rd trimesters may have an error in determining the gestational age. The PDR established according to them may differ from the real one by 2-3 weeks.