Pregnancy Week 38 — Baby Development, Size & What to Expect

Week 38 of pregnancy — 3rd trimester. Baby is the size of a leek 🧅, approximately 49.7cm long and weighing 3.08 kg. Gaining ~30g/day. Vernix thickening. Baby preparing for birth. 95% of the 40-week journey complete, 2 weeks remaining.

PREGNANCY WEEK 383rd TRIMESTER

🧅

leek

baby is about the size of a leek

WEEK

38

of 40

LENGTH

49.7cm

crown to rump

WEIGHT

3.08 kg

approximate

Progress95% complete
Wk 13rd Trimester (Weeks 27–40)Wk 40

2 weeks remaining · Gaining ~30g/day. Vernix thickening. Baby preparing for birth.

WEEK 38 — BABY'S DEVELOPMENT

3RD TRIMESTER · Weeks 27–40

Gaining ~30g/day. Vernix thickening. Baby preparing for birth.

HOW YOU MAY FEEL

Cervix softening and dilating. Bloody show or mucus plug loss possible.

WEEK 38 KEY FACTS

Gestational age

Week 38

Trimester

3rd (T3)

Baby length

49.7cm

Baby weight

3.08 kg

Progress

95% complete

Weeks left

2 weeks

FREQUENTLY ASKED QUESTIONS

What happens at week 38 of pregnancy?

At week 38 of pregnancy (3rd trimester):\n\nBaby development: Gaining ~30g/day. Vernix thickening. Baby preparing for birth.\n\nBaby size: leek 🧅\nLength: approximately 49.7cm (crown to rump)\nWeight: approximately 3.08 kg\n\nPregnancy progress: 95% complete (2 weeks remaining)\n\nGestational age is counted from the first day of your last menstrual period (LMP), not from conception. Week 38 begins on day 260 and ends on day 266 from your LMP.

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Pregnancy week 38 · 3rd trimester · Baby size: leek 🧅 · 49.7cm · 3.08 kg · Sources: ACOG, WHO fetal growth data