My Baby - Week by Week Pregnancy
Week 16 - Fingernails and Toenails
Your baby now weighs just over 3 ounces and measures about 4.5 inches long. You may have an ultrasound scheduled soon which may tell you whether it's a boy or a girl, if you want to know.
His or her fingernails and toenails are now fully formed, and internally your baby's urinary tract and bladder are functioning, emptying about once every hour.
See a baby at 16 weeks: Ultrasound image at 16 Weeks
How is your body changing this week? Find out: My Pregnant Body Week 16
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