There seems to be some fresh preparation in my chest. I don't know what breathing means yet.
What may be happening this week
During this period, blood vessels in the lungs keep developing; lung maturation is a long process that continues until the end of pregnancy. Its pace can vary from baby to baby.
A note for you
For the mother, there may be moments this week when breath feels a little shorter; it is worth mentioning to her doctor, and breathlessness that comes on suddenly or feels severe needs care right away. For the father or partner, matching the pace together on stairs or walks can be a simple kind of support.
Breathing is a longer topic. This week let's leave it as a small heading.
Sizes are averages and every baby grows at their own pace. This page is general information, not medical advice.