Pregnancy Home > 18 Weeks Pregnant

By the time you are 18 weeks pregnant, the baby's growth rate may have slowed down, but his or her reflexes are developing rapidly. Changes in your baby at about week 18 of pregnancy include increased fetal movements, the development of taste buds, and the hardening of the bones. When you're about 18 weeks pregnant, you may have an ultrasound to check the development of the baby; many pregnant women have an ultrasound between weeks 18 and 22 of pregnancy.

18 Weeks Pregnant: An Overview

During week 18 of your pregnancy, your baby measures about 5 to 5.6 inches from crown to rump and weighs about 5.25 ounces. The rapid growth spurt is slowing down during this time, but your baby's reflexes are developing quickly. Your baby can now yawn, stretch, and make facial expressions.
 
Your uterus is continuing to expand with your baby -- it is now about the size of a cantaloupe!
 
Written by/reviewed by:
Last reviewed by: Arthur Schoenstadt, MD
Last updated/reviewed:
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