Can bending over, slouching or accidentally sleeping on stomach hurt the baby at 22 weeks?

I feel him move everyday, but I was curious if I could have hurt him when I accidentally rolled on my stomach during the night..Or bending over which I have to do A LOT b/c I do daycare and am CONSTANTLY cleaning...Is it restricting his growth or causing physical defects?? I had my 20 week ultrasound and the tech said he looked great. I do have to go back next week b/c she was unable to get a the measurements needed-he was so curled up she couldn't get the right angles...Thanks to all