4 Weeks Pregnant

THIS WEEK: FIRST MISSED PERIOD

Baby's Development

The embryo is formed. These three primitive cell layers will generate every organ and tissue in your baby's body.
Around the end of this week, primitive blood vessels and circulatory system are formed.

Your Developments

Missing your period this week may be your first real sign of pregnancy
Time for a pregnancy test as results are more likely to be reliable now. Make sure to follow the manufacturer's instructions to avoid an incorrect result.