First trimester
Week 9 of Pregnancy
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About the size of a green olive
0.9 in · 2.3 cm · 0.1 oz · 2 g (crown to rump)
Your baby this week
- All essential organs are present in basic form — the next months are about growth and refinement.
- The small embryonic tail is gone; the body straightens.
- Taste buds begin forming on the tongue.
What you may be feeling
- Heartburn may start
- Emotional ups and downs
- Clothes feeling snug
Gentle tips for this week
- Smaller meals and avoiding lying down right after eating can ease heartburn.
- Start exploring comfortable, stretchy wardrobe options.
Common question for week 9
When does an embryo become a fetus?
At the end of week 10. Until then the developing baby is called an embryo; from week 11 onward the term is fetus.
Every pregnancy is different. Sizes are averages, symptoms vary widely, and none of this replaces the guidance of your own provider.