18 Weeks Pregnant...
Size of a Baby Doll

  • fetal age = 16 weeks
You're 18 weeks pregnant and your baby is about 6 inches long and weighs about 7 ounces. Your baby is about the size of a small baby doll...still a bit tiny, but so precious!

Baby still has a lot of room in your tummy to move and squirm and roll. Others may be able to feel the baby if they place their hands on your belly (if you don't mind that of course).

A protective covering called Myelin is beginning to form around the baby's nerves, this is a process that will continue for a year after the baby is born.

Also developing inside your baby's little body is the stomach, intestine and colon. The intestines will collect meconium which is the initial stool baby will pass once born.

The four-chambered heart is beginning to build up muscle cells. The skin is still pinkish and transparent and his ears stick out from his head. Since baby can now hear, he may be startled by sudden loud noises.

Along with the lanugo that is covering baby's body, vernix caseosa is forming on baby's skin. This is a waxy cheese like substance that will also help to protect your baby's thin skin while in the amniotic fluid. This also helps with delivery, helping baby to "slide" out.

Tiny air sacs called alveoli start to form in lungs and the vocal chords are also formed. Your baby goes through the motions of crying but of course can't make a sound without air.

You may be able to recognize when your baby is awake and asleep. Normally during the day when your up and busy the baby seems to be sleeping, maybe because your "rocking" your baby to sleep with your movements. At night when your trying to sleep or relax, baby may be up and ready to play.

At 18 weeks pregnant, if you're having a baby girl, her uterus and fallopian tubes are formed and in place. If your baby is a boy, his genitals are noticeable, although he may try to hide them from you during an ultrasound.

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