Quoting Pregnant*Love:" Well It wasn't her wiggling around because believe me I know what that feels like, she is a pro at moving. ... [snip!] ... a pro at moving. We will see, tomorrow I have my doc appt with my fetal specialist I will ask him and see if it is possible... "
Think about it. If you were underwater in a swimming pool, do you think people standing on the edge could see you breathing? Your baby isn't taking deep "breaths", they're inhaling very tiny amounts of amniotic fluid into their very tiny lungs.
I very highly doubt it's possible.