By sixteenth week your baby is about 12 cm long and weighs about 100 grams. Your baby has a thin skin now. It regulates baby’s body temperature. Fat accumulates under you baby’s skin giving your baby’s body its proper contours. Studies have shown that by now your baby hears external noises. You baby now has sleep and awake cycles. Fetal EEG has shown that the baby dreams! There are breathing movements now even though no air enters lungs and the airways are filled with fluid. These breathing movement help in maturation of lung tissue and respiratory muscles. Breathing movements take amniotic fluid into your baby’s lungs. Therefore chemicals related to lung maturation are detectable in the amniotic fluid. Amniotic fluid is the “water” inside the baby’s water bag. Facial muscles develop further and your baby shows various facial expressions. Your baby keeps its head much more erect. The face is much more mature. Heart, blood vessels, kidneys and tubes are all working well by now.
Your baby bump is prominent now. I regret to say that there will be a bit of a weight gain of about 2.5 to 4.5 KGs. But be happy. This weight can be shed after you deliver if you work at it. Most second time moms feel the first movement of the baby around this week. There might be some pain in your lower abdomen and back as your ligaments stretch as the baby grows.
Keep your pregnancy records in order. It is a big help to your doctor. When you see your doctor for anything he can easily track your progress through your pregnancy. Investigations, scans and notes of your obstetrician are of vital importance. Back pain and pelvic pain responds to simple pain killers. Drink a lot of water. Eat healthy. Take your vitamins regularly.
Need to think about the clothing. Should avoid tight wear below belly button. Avoid buttons or belts