I can only sleep on my back. Its weird, kind of a mental thing but it works for me i guess. Thus, i also wake up on my back.
It's different all the time. Most of the time me and my dog fight over the bed, and he literally shoves me and groans (he's a male too, go figure) everytime he doesn't get it his way. But he's about a foot long, so he's small and not so much in the way.
Usually on my right side or my back. When I was younger I used to sleep walk alot and would end up in the bathroom, garage, basement, and other random rooms in the house..
normally its on the right side facing her, with the phone alarm going off, phone going off, and 2 clock alarms going off takes a lot to wake me up , One time I did wake up naked outside in the rain although I wasn't directly in the rain but under a covered patio, how I got there naked is another story
I don't know I've never paid attention to this. Interesting question all the same. I would say face in pillow, on my front or on my back.