soccer, yes I did preggo yoga and yes it definitely helped in labour and birth. In fact, I'd go as far to say that it helped me have the birth I wanted (minus the water) with no drugs, gas or air! In our class, it wasn't so much about movements and exercise as breathing techniques and positions that would help us to have an active birth (it hurts far less if you can be active, not lay on your back like the tv shows, and can control your breathing properly).
Re movements. I saw my mw today and she said that women are so hung up on when/what etc, they can miss tiny movements and then panic themselves silly no shit, Sherlock.The only time you need to worry, according to her, is if you've not felt anything by 24 weeks. Even with second/third baby, it's common not to feel anything until past 22 weeks. She's a v positive mw and right now, that positivity is exactly what I need!