Week 1 of Pregnancy

Pregnancy Calendar: You are now 1 weeks pregnant

1 weeks old fetus (baby)

Week 1 of fetal development

In the first week, your uterus is preparing for pregnancy, as in every month throughout your reproductive health cycle. The first day of your last menstrual period is the day of your pregnancy, when you conceive. The endometrium (lining of your uterus) is shed during the days you bleed, and when the bleeding stops, the endometrium is rebuilt. An ovum or egg starts to mature at about day five of your cycle in any one of the two ovaries, and it keeps growing till ovulation occurs in mid-cycle.

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