Week 19 - 20
January 6th, 2007 at 9:28 pm (Stages of Pregnancy)
Week 20 is seen as the ‘half way’ point in a standard 40 week pregnancy. Your baby now measures about 22 cm from head to toe (or 8.8 inches) and weighs about 340 grams (or 12 ounces).
During the 20th week, your baby’s nails form and their fingerprints are now visibly engraved in their fine skin. Their permanent teeth now appear behind their baby teeth deep within their gums. The bones in your baby’s inner ear and their nerve endings are now developed to the point where it is possible for them to hear sounds (although their ears are not structurally complete until 24 weeks).