(BTW, those aren’t stretch marks. Just unfortunate clothing marks…I could photoshop but I’m lazy.)
Your baby weighs about 1 1/2 pounds and has undergone a growth spurt in the past few weeks. From weeks twenty to twenty-eight, she almost doubles in height and now would be about a foot tall if she could stand. This week marks a major milestone in your baby’s hearing and sight. Your baby’s hearing system (cochlea and peripheral sensory end organs), which began fine development during week eighteen, is now completely formed, and over the next few weeks, she’ll become increasingly sensitive to sound. In about a month, you’ll feel her jump if she hears a sudden loud noise. Sound passes easily into your uterus, which helps her ears develop. Her eyes are almost fully formed. Did you know that all babies have blue eyes in the womb, no matter what their genetic inheritance is? A baby’s eyes don’t get their final color until a few months after they are born. The air sacs of the lungs, called alveoli, will be developed by the end of this week and will begin to secrete a substance called surfactant that keeps the lung tissue from sticking together.
