Week by week
You're 21 weeks pregnant: what to plan
Drag along the weeks, tap one, or use the arrow keys
Planning milestone
Baby is about the size of
a carrot
- Length · head to heel
- 11 in
- Weight
- 13 oz
Averages only. The dashed rings show baby’s size at 27 and 40 weeks. Your scans are what count.
Week 21
Second trimester · 19 weeks to your due date
Halfway there — time to turn research into a registry and a plan.
- Update your budget with registry gaps
- Create your baby registry
- Pick a date for the baby shower
- Fill in parental leave paperwork
Week 21carrotCalculate your due date
Estimate only — talk to your healthcare provider about your due date.
Pregnancy week by week
What to plan, buy and book at each stage.
- Week 4
- Week 5
- Week 6
- Week 7
- Week 8Start your pregnancy budget
- Week 9
- Week 10
- Week 11
- Week 12Research childcare waitlists
- Week 13
- Week 14
- Week 15
- Week 16Compare strollers and car seats
- Week 17
- Week 18
- Week 19
- Week 20Create your registry
- Week 21
- Week 22
- Week 23
- Week 24Plan the baby shower
- Week 25
- Week 26
- Week 27
- Week 28Book parenting classes
- Week 29
- Week 30
- Week 31
- Week 32Choose a pediatrician
- Week 33
- Week 34
- Week 35Pack the hospital bag
- Week 36Install the car seat
- Week 37
- Week 38
- Week 39
- Week 40Due date week
- Week 41
- Week 42