Second trimester
Pregnancy Week 20
Your baby is about the size of a banana.
Size
banana
Length
16 cm
Weight
300 g
Baby in week 20
Halfway point. Anatomy scan reveals organs and possibly sex.
What you may notice this week
Belly button may pop out. Linea nigra may appear.
Tips for week 20
- Anatomy scan typically scheduled this week
- Start thinking about baby names
- Begin nursery planning
Tools that pair with this week
Due Date Calculator
Estimate your delivery date by last period or conception date. Naegele’s rule plus cycle adjustments.
Week Tracker
See exactly how many weeks and days pregnant you are, plus your trimester and key milestones.
Contraction Timer
Tap once to start, once to stop. Tracks duration, frequency, and pattern over time.
Ovulation Calculator
Find your fertile window based on your cycle length. Plan or avoid with confidence.
Baby Name Generator
Filter by origin, style, length, and starting letter. Boys, girls, and unisex.
Growth Percentile
Plot your baby’s weight, length, and head circumference against WHO percentile curves.