That is rather a personal question, don’t you think? Since when do you feel entitled to what happens in my bedroom much less my bed?! I am shocked and appalled that you would cross this line with such an offensive inquiry. Side, if you must know.
I sleep on my back with the pillow wrapped around my head so I don’t tilt to much to one side. After my neck surgery I can’t be propped up to much or I’ll wake up in horrible pain. I don’t move at all either from what I’m told. That is if I actually sleep.