20 weeks pregnant
At 20 weeks your baby is about the size of a banana (about 25 cm head to heel · 300 g). Here is what is happening for you both this week.
- Size
- a banana
- Length · weight
- about 25 cm head to heel · 300 g
- Trimester
- Second
- Weeks to go
- 20
Your baby at 20 weeks
You are halfway. The morphology scan checks growth, organs and where the placenta sits.
Your body at 20 weeks
Your uterus reaches about the level of your belly button.
Your to-do list for week 20
- Have your morphology scan
- Whooping cough vaccine is recommended from 20 weeks, ideally by 32 weeks
Common questions
How many months pregnant is 20 weeks?
20 weeks is in month 5 of pregnancy and the second trimester.
How big is my baby at 20 weeks?
At 20 weeks your baby is about the size of a banana (about 25 cm head to heel · 300 g). Every baby grows at its own pace.
All 40 weeks
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
Useful tools
PregnancyDue date calculatorInstant due date, week and trimester.PregnancyPregnancy plannerEstimate dates and organise the weeks ahead.PregnancyAppointment trackerScans, tests, vaccinations and questions in one list.
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