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27 Weeks Pregnant

At 27 weeks, the second trimester ends. The baby may get hiccups that you can feel.
Baby is about the size ofA cabbage
LengthAbout 36.6 cm
WeightAbout 875 g
Week 27 of 40, second trimester13 weeks to go

Your baby at 27 weeks

This is the last week of the second trimester. The brain is very active and the baby may get hiccups, which feel like small rhythmic jerks.

Your body at 27 weeks

Back pain, tiredness and needing to pass urine more often may return as the baby grows.

Your checklist this week

  • Ask about the Tdap (whooping cough) vaccine. ACOG recommends it between 27 and 36 weeks of each pregnancy.
  • If your blood group is Rh negative, ask about anti-D injections, often given around 28 weeks.
  • Plan time off work and your maternity leave dates.
Week 26
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Week 28

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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.