Week by week
Every week mapped — what's happening with baby, what to expect in your body, and what's worth knowing right now.
First trimester Weeks 1–13
All the big firsts. A heartbeat begins, major organs form, and the embryo officially becomes a fetus. Many people don't know they're pregnant until week 5 or later — it all still counts.
Second trimester Weeks 14–27
The sweet spot. Energy often returns, the bump becomes visible, and around week 16–20 you'll feel the first movements. The anatomy scan at week 18–20 is one of the biggest milestones.
Third trimester Weeks 28–40
The home stretch. Baby fattens up, finds their position, and prepares for the outside world. Week 37 is full term — from here, any day is a good day.