Week 13 of pregnancy — 2nd trimester. Baby is the size of a pea pod 🫛, approximately 7.4cm long and weighing 23g. 2nd trimester begins. Fingerprints forming. Vocal cords developing. 32% of the 40-week journey complete, 27 weeks remaining.
PREGNANCY WEEK 13 — 2nd TRIMESTER
🫛
pea pod
baby is about the size of a pea pod
WEEK
13
of 40
LENGTH
7.4cm
crown to rump
WEIGHT
23 g
approximate
27 weeks remaining · 2nd trimester begins. Fingerprints forming. Vocal cords developing.
WEEK 13 — BABY'S DEVELOPMENT
2ND TRIMESTER · Weeks 13–26
2nd trimester begins. Fingerprints forming. Vocal cords developing.
HOW YOU MAY FEEL
Energy returning. Bump becoming visible. Often called honeymoon trimester.
WEEK 13 KEY FACTS
Gestational age
Week 13
Trimester
2nd (T2)
Baby length
7.4cm
Baby weight
23 g
Progress
32% complete
Weeks left
27 weeks
What happens at week 13 of pregnancy?
At week 13 of pregnancy (2nd trimester):\n\nBaby development: 2nd trimester begins. Fingerprints forming. Vocal cords developing.\n\nBaby size: pea pod 🫛\nLength: approximately 7.4cm (crown to rump)\nWeight: approximately 23g\n\nPregnancy progress: 32% complete (27 weeks remaining)\n\nGestational age is counted from the first day of your last menstrual period (LMP), not from conception. Week 13 begins on day 85 and ends on day 91 from your LMP.
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Pregnancy week 13 · 2nd trimester · Baby size: pea pod 🫛 · 7.4cm · 23 g · Sources: ACOG, WHO fetal growth data