I sleep on my right side, in a (forward) tilted position. Usually. If its not the right, then its the left. I hate sleeping on my back, its painful and meh.
Sometimes I sleep on my stomach, with my neck turned to either side (usually the right), but when I wake I'm in pain.
Lately, due to the plethora of piercings I've gotten, my sleeping positions have been quite awkward. Although for awkward positions my worst one was sleeping whilst sitting up with my forehead resting on a bedside table and my shoulder against a wall. I had chickenpox
I've also got sleep apnea, my stomach never distends though... Is this common?