Trimester 1 · Week 13 of 40
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13 weeks pregnant
Your baby is the size of a lemon
Length
2.9″
7.4 cm
Weight
0.81 oz
Trimester
1
What's happening at 13 weeks
Vocal cords are forming. Baby has fingerprints now — uniquely theirs forever.
What your baby is doing
Intestines have moved out of the umbilical cord and into the abdomen where they belong. Baby can put a thumb to their mouth.
What's happening to you
Last week of T1. Energy starting to return, nausea fading for most. The bump is becoming real — not just bloat.
On the heartbeat
Office doppler catches the heartbeat easily. Cudly still won't reliably capture — baby is too small and the uterus is still mostly behind the pubic bone.
Your journal prompt for week 13
“What's the kindest thing someone has said to you since you got pregnant?”
Write it in CudlyStart 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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