1st month of pregnancy:
Weeks 3, 4

3rd week of pregnancy

Week 3, Mum's health: You're unaware that you're pregnant, but fertilisation has taken place. You probably won't feel affected by the changes taking place yet; it's only later, when your period is late and when you've taken tests, that your pregnancy is confirmed...

Week 3, baby: Fertilisation (when a sperm penetrates an egg) takes place in the Fallopian tubes, then the fertilised egg (ovum) moves slowly towards the uterus (womb). Towards the end of this week, the fertilised egg embeds itself in the lining of the uterus, this is known as implantation...

Week 3, advice: If you smoke or drink, now's the time to quit cigarettes and alcohol for the sake of your baby's health. Smoking puts your unborn baby's life in danger It's never too late to quit, even if you're already pregnant...

4th week of pregnancy

Week 4, Mum's health: On average, a woman's menstrual cycles last 28 days... but with some variations! With your period now late (if you have regular cycles), you will start asking yourself questions. 4-5 days after the expected date of your period, you can buy a pregnancy test to find out if you're pregnant...

Week 4, baby: At the beginning of its second week of life, the egg starts to embed itself in the lining of the uterus (this is called implantation). A very large number of cells multiply. Certain cells soon start to "specialise": some move towards the edge, other larger ones stay in the middle...

Week 4, advice: You're still not aware that you're pregnant. Perhaps you just feel a bit more tired than usual. The start of a so-called "normal" pregnancy shouldn't mean a radical change to your regular activities, but there are a few precautions to take...

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