3rd trimester · Week 37
37 weeks pregnant
Early term — lungs are usually ready
From 37+0 weeks a pregnancy is early term. Most babies breathe air adequately, though a few extra days still help the brain and feeding. Uncomplicated pregnancies are often allowed to wait for labor.
How big is your baby at 37 weeks?
- Length
- 48.6 cm
- Weight
- 2,860 g
- Size
- Pineapple
On average about 48.6 cm long and 2,860 g. Size comparison: Pineapple.
These are averages; every baby grows at their own pace.
How is your baby developing at 37 weeks?
Fat continues to round the cheeks. The intestines have meconium. Average length is about 48–49 cm; weight often near 2.9 kg. The fetus may move less widely but should still have a clear daily pattern.
What changes in your body at 37 weeks?
Nesting energy can appear — or exhaustion. The cervix may begin to soften; a check is optional and a “closed cervix” does not mean labor is far. Loose stools can precede labor for some people.
Tips for this week
Know your hospital’s labor advice (for example, contractions every 5 minutes lasting a minute, for an hour — local rules differ). Do not avoid eating light meals in early labor unless you were told to. Reduced movements are still an emergency reason to be seen, even at term.
