Your developing baby – week 16

by Kaiser Permanente |
Fetus at week 16, illustration

By the time you are 16 weeks pregnant, your baby has grown to over 5 inches in length, weighs 3 to 4 ounces, and is about the size of an apple. 

Your baby continues to grow quickly and is becoming stronger. They can:

  • Hold up their head.
  • Make facial expressions.
  • Move around inside the amniotic sac.
  • Make sucking motions.

Your baby’s intestinal tract is now producing a form of waste called meconium.

This article has been created by a national group of Kaiser Permanente ob-gyns, certified nurse-midwives, pediatricians, lactation consultants and other specialists who came together to provide you with the best pregnancy, birth, postpartum, and newborn information.

Some of the content is used and adapted with permission of The Permanente Medical Group.