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week 12
Illustration of baby development at week 12 of pregnancy

First Full Trimester: Your Baby in the Twelfth Week of Pregnancy

Updated on

  • Baby size 5.4 cm
  • Approximate weight 14 g
  • About the size of a lime

At the twelfth week of pregnancy, your baby has reached an important milestone completing the first trimester. Now the baby is about the size of a plum and is actively moving, although you cannot feel these movements yet. The facial structures are well formed and the eyes, which were previously on the sides of the head, are now more towards the front. Nails are beginning to develop and bones are hardening. All major organs are functioning and continue to mature. This is an exciting period where your baby prepares for rapid growth and development in the coming months.

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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.