DueNest
All calculators

38 Weeks Pregnant

At 38 weeks, the baby’s organs are ready and it is putting on fat.
Baby is about the size ofA pumpkin
LengthAbout 49.8 cm
WeightAbout 3.1 kg
Week 38 of 40, third trimester2 weeks to go

Your baby at 38 weeks

The baby’s organs are ready to work on their own. It continues to put on fat to help control its temperature after birth.

Your body at 38 weeks

You may feel strong pressure in your pelvis and a burst of energy to prepare your home, often called nesting.

Your checklist this week

  • Rest as much as you can and keep meals simple.
  • Confirm who will look after older children or pets when labour starts.
  • Contact your maternity unit if your waters break, even without contractions.
Week 37
All weeks
Week 39

Not sure which week you are in?

Use our Due Date Calculator or Pregnancy Week Calculator to find out exactly how far along you are.

Your baby this week

Sign up for a short weekly email about your baby’s growth, what is changing in your body and what to do next. Free, and you can unsubscribe at any time.

Jump to a week

Find your week

When to call your doctor

  • Bleeding from your vagina
  • Severe pain in your tummy
  • A bad headache, blurred vision or sudden swelling
  • Fluid leaking from your vagina
  • Fever, or pain when you pass urine
  • Later in pregnancy, your baby moving less than usual

In an emergency, call your local emergency number.

Based on ACOG and NHS guidance. Sizes are averages: every baby grows at its own pace.