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10 Weeks Pregnant

At 10 weeks, the embryo becomes a fetus. All vital organs are in place and nails are starting to form.
Baby is about the size ofA strawberry
LengthAbout 3.1 cm
WeightAbout 4 g
Week 10 of 40, first trimester30 weeks to go

Your baby at 10 weeks

This week marks the end of the embryonic period: the baby is now called a fetus. The vital organs are in place and will keep growing and maturing. Tiny nails are beginning to form.

Your body at 10 weeks

Your waist may be starting to thicken. Nausea and tiredness often continue, but for many they begin to ease over the next few weeks.

Your checklist this week

  • If you choose a cell-free DNA (NIPT) blood test, it can be done from 10 weeks.
  • Make sure your first-trimester blood tests are booked or done.
  • Plan your NT scan, which is done between 11 and 14 weeks.
Week 9
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Week 11

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

Your baby this week

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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.