This is probably going to sound really weird to you guys, but 4 or 5 years ago I had a serious injury that cut open a bunch of my skin on the right side of my ribcage. I broke a rib and had terrible cuts and I still have the scars from the cuts. Now whenever I'm going to sleep I HAVE to sleep on my left side or on my back or I go crazy. Sleeping on my right side doesn't feel different from before, it's just I have this fear that something is going to happen, and it scares me to sleep on my right side now :(