Our baby now weighs about 3.5 lbs and measures about 18 inches in total. Our baby’s increasing size means that he has less room to move around in your uterus. At our last midwife appointment (which took place in my living room, thank you very much!), she thought the baby was for sure head down, and most likely posterior.
Our baby’s lungs are maturing and their lining, which prevents air sacs from collapsing, is growing. This lung development means that Baby C would have a much greater chance of survival if he were born prematurely. About 16 fluid ounces of blood are flowing through the wall of my uterus to the site of the placenta, though my blood never mixes with Baby C’s blood. It is separated by the placental barrier which is a very thin wall. Water, nutrients and waste are exchanged across this barrier at a rate of 0.3 fluid ounces per second. Our baby swallows amniotic fluid and urinates. Our baby’s ears are sufficiently developed to hear and recognize your voice, the voices of other family members as well as familiar musical tunes. I’m sure he knows a lot of nursery rhymes and is familiar with Laurie Berkner and Go Fish, who have been stuck in our CD player for weeks. I bet he loves all the hugs and pokes he gets from his big sisters.
Our baby is probably aware of your Braxton Hicks contractions, which you experience regularly, even when you do not notice them. By this time, our baby is very active and I feel its movements frequently. Our baby is still practicing breathing movements which have now become rhythmic. Sometimes he gets the hiccups –which Aviana and I both can feel–when he accidentally swallows amniotic fluid the wrong way. He is getting fatter and plumper. If we had another ultrasound, we could see your baby’s activities quite easily. Even ten weeks ago we could see him boppin’ around in there.
Our baby has periods of rest and periods of activity now. Our baby is most active when you are trying to rest.
The site I check for these updates had a post about “Staying Comfortable in Hot Weather”. As you can see, Iowa has yet to get that message. It’s May 21 and I am still in long sleeves for heaven’s sake!