Trimester 1 · Week 12 of 40
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12 weeks pregnant
Your baby is the size of a lime
Length
2.1″
5.4 cm
Weight
0.5 oz
Trimester
1
What's happening at 12 weeks
End of the first trimester. The miscarriage risk drops significantly. Time to tell people, if you want to.
What your baby is doing
Baby is now fully formed in miniature. Reflexes developing — they may even suck their thumb.
What's happening to you
Nausea easing for many. Bump may be visible if it's not your first.
On the heartbeat
First-trimester ultrasound (NT scan) usually happens this week. Office doppler reliable now.
Start your pregnancy story today.
Record your baby's heartbeat, write down the day, watch your weeks unfold. Free to download — no doppler, no ads, no data selling.
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