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First and second week of pregnancy (1st week & 2nd week)

by Josephine Andrews
Published: Last Updated on 308 views

The first week of pregnancy (1st week of pregnancy) – that sounds promising. It is the official beginning of pregnancy. You’re not even pregnant yet – and not even in the 2nd week of pregnancy (2nd week of pregnancy)! You can find out here why this is the case and what happens to you in the first two weeks of pregnancy!

First week of pregnancy: How it is calculated

Although the name suggests it: in the 1st week of pregnancy the woman is not 1 week pregnant. Nor is she the second week pregnant at 2 weeks pregnant. These two weeks are only retrospectively referred to as the official beginning of pregnancy.

The first week of pregnancy begins on the first day of your last period. The due date (40 weeks later) is then calculated from this point in time.

1st & 2nd week of pregnancy: That changes for you

Although there is no fertilized egg yet, your body is preparing for a possible pregnancy during the first and second weeks of pregnancy.

1st week of pregnancy: uterus is preparing

The lining of the uterus must be thick and well supplied with blood for the fertilized egg to implant. Therefore, in the first week of pregnancy, the old mucous membrane is removed and rebuilt by the menstrual period.

2nd week of pregnancy: ovulation

You are not pregnant yet. However, you are now approaching the middle of the menstrual cycle – the fertile phase is beginning. This means that towards the end of the second week of pregnancy – i.e. about 14 days after the start of the last menstrual period – ovulation occurs:

The hypothalamus in the brain signals the pituitary gland ( pituitary gland) torelease follicle-stimulating hormone (FSH) and luteinizing hormone (LH) into the blood . These promote the maturation of the egg sacs (follicles) in the ovaries. Normally, however, only one follicle fully matures per cycle. During ovulation, this follicle ruptures on the surface of the ovary, releasing the fertilizable egg. It is absorbed by the fallopian tube and slowly travels down into the uterus.

Some women feel ovulation as a slight ache. Another good indicator is the consistency of the cervical mucus, which you can measure using the Billings method . The key here is that the mucus that you simply scrape out of the vagina with a finger pulls strings.

You can also determine the approximate time when an “egg is ripe” with an ovulation test from the pharmacy. The concentration of the hormone LH in the urine is measured with a test strip. This increases significantly around 24 to 36 hours before ovulation.

additional Information

You can find out how to determine the time of ovulation in the article Ovulation .

2nd week of pregnancy: How to get pregnant

In order to make the first week of pregnancy the same, the mature egg cell must be fertilized in the second week of pregnancy. A woman is particularly fertile immediately before and after ovulation: the egg cell can be fertilized on its way through the fallopian tube to the uterus. The time window for this is 12 to 24 hours.

The good news is that it’s not necessarily important to have sexual intercourse within those 24 hours. Sperm can survive in the woman’s body for three to five days and wait for the egg cell.

By the way: If you want to increase the chances of getting pregnant, the motto is not only for the first week of pregnancy, but in general: stay away from cigarettes and alcohol. Eat a particularly healthy diet. An adequate supply of folic acid is also important : women who want to have children and pregnant women up to the end of the first trimester should take a folic acid preparation with 0.4 milligrams per day. The vitamin is involved in cell division and growth processes.

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