I sleep on my side, legs curled, bottom arm between my legs. Sometimes I turn more on my belly, one leg straight, one leg curled.
As long as nobody is touching me, I am good. Poor DH. Right now I HATE snuggling. BACK OFF.
Any position that gets DS away from kicking me. He is a massive flopper and we have a king size bed and DH works while we sleep, so there isn't really a reason why he has to have his feet in my spine/ kidneys/ face.
Usually I start out with a pillow between my legs on my side, then on my back, then on my stomach, then back to my back. I sleep terribly. I have been falling asleep more on my couch lately, it reclines but is up against a wall so it doesn't recline fully, but it's pretty comfy.
I change so much. I love sleeping on my stomach, but it is starting to get uncomfortable. I find myself sleeping on my back more, I normally don't do that. I think I am at the stage though where I don't need to be doing that. DH likes to grab me and throw his legs over me so I can't move, I hate it! If I get away from him I try to get in a position so he can't catch me again!