First trimester · Week 9 of 40
9 weeks pregnant: the size of a cherry
All essential organs have begun forming. The embryonic tail disappears.
Reviewed against ACOG, NHS and WHO guidance · Updated November 2026
Typical size
About 2.3 cm
23% of the way to your due date
Your baby this week
All essential organs have begun forming. The embryonic tail disappears.
Your body this week
Bloating, mood swings and constipation are common.
Tip for week 9
Add fibre (oats, fruit, vegetables) and fluids to help with constipation.
Carry this guide in your pocket
Mamivaa is a free pregnancy app with a week-by-week tracker, vitamin and water reminders, a food scanner and a baby checklist.
Start freeThis guide offers general information and does not replace advice from your doctor or midwife. If something feels wrong, contact your provider or emergency services.