When can I sleep on the other side grrrr....

Yes, sleeping comfortably after surgery is difficult. I remember feeling very twisted up in my hip, back & shoulder until I could sleep on my surgery side, which was quite a few weeks. All I can suggest is try different pillow arrangements. The first time I slept comfortably on my mastectomy side for a few hours was pure bliss. It was a bit hit and miss for a while with sometimes finding a good position and sometimes finding it unbareabe. As for prosthetics and bras I went braless for weeks then bought some soft wire free bras from target with a soft form for a while before i felt healed enough for a permanent prosthetic. I wore a prosthetic during chemo, but the stiff bras would still dig in and hurt at times. Now I'm back to braless and sleeping only on one side because of bad radiation burns. Can't wait to comfortably roll over too!