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week 31
Illustration of baby development at week 31 of pregnancy

Complete Development: Your Baby in the Thirty-First Week of Pregnancy

Updated on

  • Baby size 41.1 cm
  • Approximate weight 1,5 kg
  • About the size of a coconut

In the thirty-first week of pregnancy, your baby has grown significantly and measures approximately 41 cm and weighs around 1.5-1.6 kg. Your baby's movements are stronger, and you may feel frequent kicking and stretching. The lungs continue to develop and the baby is practicing rhythmic breathing movements. The brain continues to grow rapidly and the baby is accumulating fat under the skin, giving it a fuller appearance. The baby's skin becomes smoother and less wrinkled, preparing for birth. This is a crucial period where the baby continues to grow and prepare for life outside the womb.

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The images and descriptions of the baby's development from week 1 to week 42 have been generated using artificial intelligence. Although they offer a close representation, they are not 100% accurate. For exact, personalized information about your baby's development, we recommend getting an ultrasound and consulting your doctor.

This content is for educational purposes and does not replace medical advice. Sizes and weights are reference averages and vary in every pregnancy. If you notice any warning sign, seek medical care immediately.