Week 16: First flutters
You’re 16 weeks pregnant — about 24 weeks to go. Your baby is roughly the size of an avocado.
Size of
an avocado
Length
11.6 cm
4.6 in · crown to rump
Weight
100 g
3.5 oz
Your baby this week
Your baby’s muscles are getting stronger and movements more coordinated. Some parents — especially in a second pregnancy — feel the first faint flutters, known as quickening.
Your body & how you might feel
Your uterus is rising, and the top of it can be felt about halfway between your pubic bone and navel. Many feel noticeably better and more themselves now.
Common symptoms at week 16
- First baby flutters
- Backache
- Bigger appetite
- Forgetfulness
This week’s tip: Those first “bubble” flutters are easy to miss — lie quietly after a meal and you may notice them more clearly.
A gentle reminder: This is an estimate, not medical advice. Dates and figures are general guidance — every pregnancy is different. Your healthcare provider’s assessment, especially from an early ultrasound, always takes priority. Always speak with your provider about your pregnancy.
Week 16 FAQs
How big is the baby at 16 weeks?
At 16 weeks pregnant, your baby is roughly the size of an avocado, about 11.6 cm (4.6 in) long and around 100 g. These are typical averages — every baby grows at its own pace.
How many months is 16 weeks pregnant?
16 weeks pregnant is about 3 and a half months, in the second trimester, with about 24 weeks to go until your due date.
What are common symptoms at 16 weeks?
Common experiences around week 16 include first baby flutters, backache, bigger appetite, forgetfulness. Symptoms vary widely — contact your provider if anything worries you.