How many weeks and months pregnant am i

How many weeks and months pregnant am i
There are about 40 weeks in a pregnancy. (Source: Getty Images)

Many pregnant women are often muddled about getting the right count of the exact number or months of their pregnancy. Here are answers to a few common questions on calculating one’s pregnancy:

How many weeks pregnant are you?

There are about 40 weeks in a pregnancy, starting from the first day of the prospective mother’s last menstrual period. Pregnancy is usually calculated as per the date of the Last Menstrual Period (LMP). To calculate how many weeks pregnant the prospective mother is, ask her when she last had her period. The first day of her LMP is counted as the first day of the pregnancy.

How many weeks and months pregnant am i
Pregnancy is usually calculated as per the date of the Last Menstrual Period (LMP). (Source: Getty Images)

What if you don’t know the date of your last period or have irregular periods?

The due date calculation works best if the menstrual cycle is regular and the periods take place every 28 days. Just in case, one has an irregular menstrual cycle, then she might be unable to figure out her date of LMP. Or if her cycle differs in length, calculating from the first day of her LMP might not give us a date that we can trust. However, it can be really tough figuring out the date of the last period if the prospective mother has irregular period.

But the dating scan that is the first ultrasound of the prospective mother accurately tells us about the due date of the baby. The sonographer will carry out Crown Rump Length which will give an estimate idea of how far along is the pregnancy.

What is a trimester?

A pregnancy is divided into trimesters, of three months each. Pregnancy usually lasts around nine months and each pregnancy has about three trimesters. Each trimester has its own set of changes that the body and the baby undergoes.

The first trimester lasts from the very beginning of the pregnancy until the mother is 13 weeks plus six days pregnant. The second trimester lasts from when the mother is 14 weeks to 27 weeks plus six days pregnant. The third trimester lasts from when the mother is 28 weeks pregnant until she has her baby.

In the first trimester, the prospective mother is usually exhilarated about being pregnant and starts taking precautions. She needs to make some lifestyle changes. During the second trimester, the prospective mother feels much better as she is accustomed to the changes that her body is experiencing. She may have to deal with problems like morning sickness. In the third trimester, the mother needs extra energy to cope with the changes and might feel tired, undergo mood swings and experience fatigue.

How long does pregnancy last – is it 36 weeks or 40 weeks? What is the ideal period and how is it determined?

The tenure of the pregnancy is usually for about 40 weeks. Most women count 40 weeks from the first day of their LMP. It usually varies in calendar months and lunar months.

The normal length of a pregnancy can be anything from 37 to 42 weeks. A baby can arrive at any time between that. If the mother gives birth before 37 weeks of her pregnancy then the baby could be premature. Also, premature babies require extra care, nourishment and attention.

How accurate is my due date?

The due date is a guesstimate of when the prospective mother will give birth. It is just an estimation and it is not necessary that the birth of your child takes place exactly on the same date as the due date. It is okay for a baby to arrive between 37 weeks and 42 weeks of pregnancy.

(The writer is a senior gynaecologist and IVF expert, International Fertility Centre.)

You know your due date, but how many weeks pregnant are you? What about months? This guide will help you convert pregnancy weeks to months.

If you just found out that you’re expecting, one of your first questions is likely how far along am I? Knowing how many weeks pregnant you are helps you track your milestones and count down to your due date. But pregnancy math can be a bit confusing, especially when you try to convert pregnancy weeks to months. Don’t worry: We’ll break it all down for you.

Pregnancy Weeks to Months

Tracking pregnancy weeks is easy—you simply count up from the first day of your last menstrual period.

But converting pregnancy weeks to months? That’s tricky, because there’s only one month with exactly four full weeks, and that’s February. January, March, May, July, August, October, and December all have 31 days, which means the average month has four full weeks, plus a few extra days.

Since one month doesn’t really equal four weeks—it’s just a rough estimate—simply dividing by four doesn’t give you the most accurate answer. And during pregnancy, accuracy is key in order to get the best representation of your baby’s growth.

Still, inquiring folks may still ask “how many months are you?” In this case, it’s fine to use four weeks as your dividing factor. Here’s a quick cheat sheet for you:

How many months is…

8 weeks pregnant?

If you’re 8 weeks pregnant, you are two months pregnant. This means you have completed two months (8 weeks) and are working your way through your third month.

9 weeks pregnant?

If you’re 9 weeks pregnant, you are two months and one week pregnant.

10 weeks pregnant?

If you’re 10 weeks pregnant, you are two months and two weeks pregnant, or 2.5 months.

11 weeks pregnant?

If you are 11 weeks pregnant, you are two months and three weeks pregnant.

12 weeks pregnant?

If you are 12 weeks pregnant, you are three months pregnant.

13 weeks pregnant?

If you are 13 weeks pregnant, you are three months and one week pregnant.

14 weeks pregnant?

You’ve made it to the second trimester! If you are 14 weeks pregnant, you are three months and two weeks pregnant, or 3.5 months. This is a great time to start drinking red raspberry leaf tea.

15 weeks pregnant?

If you are 15 weeks pregnant, you are three months and three weeks pregnant.

16 weeks pregnant?

If you are 16 weeks pregnant, you are four months pregnant.

17 weeks pregnant?

If you are 17 weeks pregnant, you are four months and one week pregnant.

18 weeks pregnant?

If you are 18 weeks pregnant, you are four months and two weeks pregnant, or 4.5 months.

19 weeks pregnant?

If you are 19 weeks pregnant, you are four months and three weeks pregnant.

20 weeks pregnant?

If you are 20 weeks pregnant, you are five months pregnant. This is also when many mamas go in for their anatomy scan.

21 weeks pregnant?

If you are 21 weeks pregnant, you are five months and one week pregnant. This is a good time to sign up for a childbirth education class.

22 weeks pregnant?

If you are 22 weeks pregnant, you are five months and two weeks pregnant, or 5.5 months.

23 weeks pregnant?

If you are 23 weeks pregnant, you are five months and three weeks pregnant.

24 weeks pregnant?

If you are 24 weeks pregnant, you are six months pregnant.

25 weeks pregnant?

If you are 25 weeks pregnant, you are six months and one week pregnant.

26 weeks pregnant?

If you are 26 weeks pregnant, you are six months and two weeks pregnant, or 6.5 months.

27 weeks pregnant?

If you are 27 weeks pregnant, you are six months and three weeks pregnant.

28 weeks pregnant?

Welcome to the third trimester! You are seven months pregnant!

29 weeks pregnant?

If you are 29 weeks pregnant, you are seven months and one week pregnant.

30 weeks pregnant?

If you are 30 weeks pregnant, you are seven months and two weeks pregnant, or 7.5 months.

31 weeks pregnant?

If you are 31 weeks pregnant, you are seven months and three weeks pregnant.

32 weeks pregnant?

If you are 32 weeks pregnant, you are eight months pregnant.

33 weeks pregnant?

If you are 33 weeks pregnant, you are eight months and one week pregnant.

34 weeks pregnant?

If you are 34 weeks pregnant, you are eight months and two weeks pregnant, or 8.5 months.

35 weeks pregnant?

If you are 35 weeks pregnant, you are eight months and three weeks pregnant.

36 weeks pregnant?

If you are 36 weeks pregnant, you are nine months pregnant! This is when you should start eating your dates for a faster birth!

37 weeks pregnant?

If you are 37 weeks pregnant, you are nine months and one week pregnant. This is also when you are “cleared” to have a home birth, if that is your desire.

38 weeks pregnant?

If you are 38 weeks pregnant, you are nine months and two weeks pregnant, or 9.5 months pregnant.

39 weeks pregnant?

If you are 39 weeks pregnant, you are nine months and three weeks pregnant.

40 weeks pregnant?

Congrats! You’ve reached the end of pregnancy. You are 10 months pregnant. (More on this in a moment!) Now be on the lookout for signs of labor! If you are looking for natural induction ideas, check out this article.

Pregnancy Weeks to Months Chart

How Many Weeks Pregnant Am I? PIN

Pregnant? Get my FREE week-by-week updates! – Week by Week Promo [In-article]

Track your baby’s growth, find safe and natural remedies, and have fun along the way!

Get Pregnancy Updates!

So Is Pregnancy 9 or 10 Months?

We know pregnancy is 280 days, or 40 weeks, but how many months is it? Is it nine months? Or ten, as mentioned above? Let’s take a look at the math:

  • 40 weeks divided by 4 weeks is 10 months.
  • 40 weeks divided by 4.3 weeks (the length of the average month, as referenced above) is 9.3 months.
  • 280 days divided by 30 (average days in a month) is 9.3 months.

So which formula is right?! Technically, they all are!

How is that possible?

While your due date and the amount of time you’re pregnant doesn’t change, it’s the language being used that changes. Pregnancy is—on average—40 weeks, no matter what formula you use.

Figuring out the pregnancy weeks to months, on the other hand, depends on what number you’re using for the length of a month. When you use four, pregnancy seems to be 10 months. When you use the average number of days in a month, pregnancy is closer to nine months.

Pregnancy Trimesters

To make it even more confusing, months and weeks aren’t the only way to track your pregnancy. Trimesters are also important markers during pregnancy. So what weeks fall under what trimesters? Let’s break it down:

First Trimester

The first trimester begins on the first day of your last menstrual period and consists of 13 full weeks.

Pregnancy Charts – First Trimester

Second Trimester

The second trimester begins at the start of your 14th week. This trimester consists of 13 full weeks.

Pregnancy Charts – Second Trimester

Third Trimester

The third trimester begins after you’ve completed your 27th week, or at the start of your 28th week. This trimester is an outlier, lasting 14+ weeks.

Pregnancy Charts – Third Trimester

How Many Weeks Am I?

So here’s the big question: how many weeks are YOU? Use our due date calculator to find out. And don’t forget to bookmark this pregnancy weeks to months cheat sheet—you’ll need it!

  • Share
  • Pin
  • Email
  • Text

How many weeks and months pregnant am i

How do I calculate my pregnancy in weeks and months?

To track pregnancy and calculate a due date, doctors use gestational age. Gestation is how long a person is pregnant in weeks, and gestational age is measured from the last menstrual period (LMP) — the first day of your last period — to the current date in weeks.

How do I calculate how many months pregnant I am?

Since many women aren't aware that they are pregnant during the first two weeks, month one is extended to six weeks..
Month 1: Week 1 through week 6..
Month 2: Week 7 through week 11..
Month 3: Week 12 through week 16..
Month 4: Week 17 through week 20..
Month 5: Week 21 through week 24..
Month 6: Week 25 through week 28..

Is it 9 months or 40 weeks?

Pregnancy is counted from the first day of your last menstrual period. This means an extra 2 weeks are counted at the beginning of your pregnancy when you aren't actually pregnant. So pregnancy lasts 10 months (40 weeks)—not 9 months—because of these extra weeks.

How do we calculate pregnancy weeks?

Using the due date calculator To find your due date, enter the date of the first day of your last period, and select 'show your due date'. Pregnancy normally lasts from 37 weeks to 42 weeks from the first day of your last period. You need to know the first day of your last period to use this calculator.