Week 9: From embryo to fetus
You’re 9 weeks pregnant — about 31 weeks to go. Your baby is roughly the size of a cherry.
Size of
a cherry
Length
2.3 cm
0.9 in · crown to rump
Weight
2 g
0.07 oz
Your baby this week
Essential organs — heart, brain, lungs, kidneys — are in place and beginning to function. Tiny muscles are forming, and the heartbeat can often be heard with a Doppler.
Your body & how you might feel
Your waistline may be thickening even if you are not showing. Hormone shifts can make your emotions feel closer to the surface than usual.
Common symptoms at week 9
- Mood swings
- Breast changes
- Nausea
- Fatigue
This week’s tip: Be gentle with yourself emotionally — hormonal ups and downs are real. Rest, talk it out, and lower your expectations.
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 9 FAQs
How big is the baby at 9 weeks?
At 9 weeks pregnant, your baby is roughly the size of a cherry, about 2.3 cm (0.9 in) long and around 2 g. These are typical averages — every baby grows at its own pace.
How many months is 9 weeks pregnant?
9 weeks pregnant is about 2 months, in the first trimester, with about 31 weeks to go until your due date.
What are common symptoms at 9 weeks?
Common experiences around week 9 include mood swings, breast changes, nausea, fatigue. Symptoms vary widely — contact your provider if anything worries you.