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Fetal Development: Second Trimester


Week 13 Baby’s footprints and fingerprints are developed.


Week 14 Hair is growing on the baby’s head and body.


Week 16 Baby is 4 ½ inches long and weighs 3 ½ ounces, about the size of your fist. Baby can enter REM sleep (dream stage).


Week 19 Baby’s brain is developing, especially the areas for hearing, seeing, touching, smelling and tasting.


Week 20 Halfway point of pregnancy. Nails form on fingers and toes. The baby is big enough for you to feel his movements.


Week 21 Baby will be able to hear if you read or sing to her.


Week 22 Teeth begin to form under the gums.


Week 23 Baby weighs about one pound and can swallow.


Week 24 Baby weighs nearly 1 ½ pounds and is about a foot long. Baby is considered viable – able to survive outside the womb. Babies weighing as little as 9 ounces – less than a full can of soda – have survived premature birth.




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Choices, Options for Women’s Health Does not Refer or Perform Abortions.