By this week of pregnancy your baby's crown-to-rump length reaches about 13.5 inches and the total length is approximately 20.7 inches. Your baby weighs about 6 pounds now. The top of your uterus has moved further up under your ribs and is about 5.5 inches above your bellybutton. Your uterus has grown a lot in the past few weeks as your baby has gained weight. You may have gained about 30 pounds by now and it is common for your weight to stay about the same from this point onwards.
Because the top of the uterus is high as it will be, breathing may be getting very uncomfortable at times. You might notice jabbing pains from your baby's kicks. However, within the next few weeks, your baby will drop into the birth canal and this will make breathing easier again. Most doctors like to see their patients weekly from now on to check for labor progression. Your prenatal classes are probably coming to an end and you should have already made a birth plan and discussed available options for pain control during pregnancy.
Your baby's face has filled out significantly and looks smooth and plump. Because your baby has powerful sucking muscles and has had layers of fat forming for quite some time now, the cheeks have filled out like a newborn's. Your baby's skull is firm, but not hard. Every baby's head has the ability to give slightly so that there is room for her to fit down the birth canal during delivery. Some babies are born with cone shaped heads from the pressure of delivery, but this will go away after delivery. The amount of amniotic fluid is at its maximum amount now and your baby may not be moving as much as she had been. As long as you still feel her movements every day, there should be no cause for concern.
The placenta is now one-sixth of the fetal weight.