Select your pregnancy week from the timeline
Select your baby's age in months from the timeline
Select your toddler's age in months from the timeline
How you and your baby are changing week by week
1 week pregnant
You might not even know you're pregnant – but your body is changing and your baby is developing
2 weeks pregnant
You may not feel pregnant, but your body is producing lots of pregnancy hormones
3 weeks pregnant
You are three weeks into your pregnancy – here's the science bit!
Pregnancy support and advice for all mums-to-be. Join a forum for your due date and make friends!