Your developing baby – week 34

by Kaiser Permanente |
Fetus at week 34, illustration

By now, many babies are in the birthing position, with head pointing down near your pelvis. Your baby weighs about 5 to 6 pounds, is around 17.518 inches long, and is about the size of a pineapple.

If your baby is born at week 34, usually the lungs are almost fully developed so your baby can breathe on their own outside the uterus. In addition, your baby’s:

  • Vernix coating on the skin is thickening.
  • Amount of fine, downy hair called lanugo, is decreasing.
  • Fingernails and toenails have grown out to the tips of the fingers and toes.
  • Arms and legs fill out and become more chubby

While the testicles in most male babies have reached their typical place in the scrotum, some are born with undescended testicles. However, most testicles will descend into the scrotum before the baby turns 1 year old.

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.