Your baby's hearing organs and brain are still developing. During week 20, the connections that link your baby's brain to its ears and other sensory organs are becoming stronger and faster. Still, your baby's hearing is not believed to be active for another month. At 24 to 25 weeks, the baby can most strongly hear your heart, though it may also be aware of the sound of blood pumping around it and the sound of air in your lungs.
Week 20 Of Pregnancy
At 9 ounces, your baby will respond to sharp sounds and you will feel it wiggling, punching, and kicking. This is the halfway point of the pregnancy and it is now very obvious that you are pregnant.
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Portsmouth Regional Hospital answeredSee All 2 AnswersBy week 20, the halfway point, your baby has grown to be about 6 to 8 inches long. At this point in development, the fetus still weighs less than a pound - about 10 ounces. Your baby is large enough now that you may be feeling some stress on your bladder or stomach as it grows.