Pregnancy Week by Week Calendar

You're going through the most amazing changes over the next nine months, as the microscopic cluster of cells inside you slowly grows into a fully formed baby. Here's your week by week pregnancy calendar to what's happening to you both over the weeks to come.

The First Trimester
Experts tend to divide pregnancy into three trimesters of three months each. In this first trimester, your baby will change from embryo to foetus and take on an unmistakably human look.

The Second Trimester
These middle months of pregnancy are often the most enjoyable, as your energy returns and you feel the first thrilling flutters of your baby's movements inside you.

The Third Trimester
You're on the home stretch. Your baby's growing fast and you'll soon start to wonder if your bump can get any bigger! But it won't be long now.

To get started, simply click below on the week of pregnancy you'd like to view. Don't forget to check back every week of your pregnancy to see how your baby is developing.

First Trimester   Second Trimester   Third Trimester
         
First Four Weeks   Weeks 13-14   Weeks 27-28
Weeks 5-6   Weeks 15-16   Weeks 29-30
Weeks 7-8   Weeks 17-18   Weeks 31-32
Weeks 9-10   Weeks 19-20   Weeks 33-34
Weeks 11-12   Weeks 21-22   Weeks 35-36
    Weeks 23-24   Weeks 37-38
    Weeks 25-26   Weeks 39-40

Note: Every baby follows the same pattern of growth in the womb but may not necessarily grow at the same rate. This week by week pregnancy calendar in intended only to give you a general idea of how your baby may be developing.