Your baby says
My chest may rise and fall sometimes, but there's no air around. It's a rehearsal, I think.
What may be happening this week
During this period, breathing-like movements may be seen more often; nails may also grow toward the fingertips. Many babies may turn head-down after these weeks, but this timing varies.
A note for you
For the mother, questions about the baby's position may come to mind this week; these are good questions to ask the doctor. For the father or partner, writing these questions down together can be a simple way of taking part.
A rehearsal without air, a short note. That's enough for this week.
Sizes are averages and every baby grows at their own pace. This page is general information, not medical advice.