
Originally Posted by
sammilynn
A baby develops the ability to hear sounds at about 18 weeks into the pregnancy, according to MayoClinic.com. The uterus, though snug and warm, is not soundproof. In fact, your baby can hear -- and respond to -- a wide range of sounds, from those your body makes to sounds outside your womb.
Your baby's ears and earlobes start to form when you are about eight weeks pregnant, but it takes another three months at leas) until your baby can start picking up sounds. By the time the third trimester begins, your baby's ears are fully functional, and the range of sounds she can hear greatly increases.