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How the weeks of pregnancy are counted

The pregnancy test is positive and by far the most exciting time of your life is imminent. At the same time, many will be over the next few months Questions about pregnancy buzzing around in your head. Why are you actually pregnant for 40 weeks? In which week are you in which month and in which trimester? With our table, you always have a good overview and know which week of pregnancy corresponds to the right month and the right trimester.

Which week of pregnancy corresponds to which month?

You are probably often asked in which month of pregnancy You are right now. Most of the time, however, you only have the current week to hand. The following table is intended to help you find out, when exactly you are in which month or trimester of pregnancy.

Trimester months Weeks
1st trimester
  • 1.
  • 2.
  • 3.
  • Month
  • Month
  • Month
  • 1-4
  • 5-8
  • 9-12
2nd trimester
  • 4.
  • 5.
  • 6.
  • Month
  • Month
  • Month
  • 13-16
  • 17-20
  • 21-24
3rd trimester
  • 7.
  • 8.
  • 9.
  • 10.
  • Month
  • Month
  • Month
  • Month
  • 25-28
  • 29-32
  • 33-36
  • 37-40

The weeks of pregnancy

Over the course of your pregnancy, the duration will always specified to the exact day. Perhaps you’ve already noticed that people often talk about “6 + 3 weeks pregnant” or “24 + 6 weeks pregnant”. That may sound confusing at first, but it’s actually quite simple. SSW always means week of pregnancy. The number after it always indicates the completed week of pregnancy. The numbers from 1 to 6 after the plus sign specify the exact Day of pregnancy week on.

In our example "6 + 3 weeks pregnant," 6 is the full, completed week of pregnancy and 3 is the additional days from the next week. So in this example, you are six weeks and three days pregnant.

The trimesters of pregnancy

Your pregnancy can be divided into three important sections divide. As a rule, it takes a trimester is approximately 3 months. The third trimester is somewhat longer and describes the final stage of development up to birth. first trimester covers the first 12 weeks of pregnancy, counted from the first day of the last period. From the 13th week of pregnancy (13th week) to the 24th week, the second trimester. The last and third trimester starts from the 25th week of pregnancy and continues until birth.

Follow the development of your little bundle of joy week by week and sign up for the my junior pregnancy guide on.

Why is my pregnancy calculated from the start of my last period?

As a rule, the first day of the last period is two weeks before ovulation. Nevertheless, doctors and midwives calculate the start of pregnancy from the first day of the last period on. Strictly speaking, you were not actually pregnant at this point. However, as a rule, women can cannot say exactly on which day her ovulation occurred. That is why the first day of the last period is taken as the starting point of the pregnancy. This is because this date can be determined precisely.

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How is the due date calculated?

Your doctor or midwife will invoice you for 280 days from the first day of the last period. This date is given as the due date. That corresponds to 40 weeks. The The calculated due date usually serves only as a guideline.. Only 5 percent of all babies are born on that exact day.

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my junior® is a pram manufacturer from Aachen. We have made it our mission to ensure your To accompany happiness and your Making everyday life with a baby easier. The my junior® range now includes various pram and pushchair models, all of which have been thoroughly tested and certified. In addition to our lucky companions, we offer numerous accessories for everyday life with a baby. Our prams are developed together with midwives, physiotherapists, and experienced mums and dads developed and produced in Europe with great care and expertise.