30th Week of Pregnancy

Baby's Growth and Development When You are 30 Week Pregnant

During this 30th week of pregnancy, your baby continues to steadily add weight and important, insulating layers of fat to his body.

• At 30 weeks of pregnancy, your baby weighs about 3 pounds and is about 10 1/2 inches long from crown to rump, or about the length of a bunch of celery. (His legs and feet increase this measurement by many more inches.)
• From this week until week 37 of pregnancy, your baby gains an impressive half a pound a week!
• Your baby might be practicing breathing movements as he rhythmically moves his diaphragm. You even might notice a slight twitching in your abdomen when this happens.
• Your baby's brain continues to expand and develop, creating additional grooves and folds in the brain's surface. These wrinkles give your baby's brain tissue the needed room to expand as he develops and learns throughout his lifetime.
• Your baby's brain can now regulate his temperature, so he begins to lose the lanugo — fine hair that has been covering his body for warmth.