Second trimester
Pregnancy Week 16
Your baby is about the size of a avocado.
Size
avocado
Length
12 cm
Weight
100 g
Baby in week 16
Limbs are well-formed. The fetus can hear muffled sounds. Eyes can move.
What you may notice this week
You may feel first flutters ("quickening") if it's your second pregnancy.
Tips for week 16
- Talk and sing to your baby — they can hear you
- Begin sleeping with a pregnancy pillow
- Eat iron-rich foods
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.