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Second trimester

Week 23 of pregnancy

Your baby is the size of a grapefruit. It hears better and may react to your voice and loud sounds.

Your baby is the size of a grapefruit

Length, head to heel
≈ 28.9 cm
Weight
≈ 500 g

Your baby this week

  • Hearing is better and the baby may move when it hears your voice or a loud noise.
  • Blood vessels are developing in the lungs that will help with breathing after birth.
  • The skin is still wrinkly and reddish, as fat builds up slowly.

Your body this week

  • Mild swelling of the feet and ankles is common.
  • A blocked nose and snoring may carry on.
  • You feel the baby’s movements more often through the day.

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Read more for this stage

General information written by the mam.al editors. Every pregnancy is different and sizes are averages; it does not replace advice from your doctor or midwife. Sources include the NHS week-by-week guide to pregnancy. NHS. Contains public sector information licensed under the Open Government Licence v3.0.