I also did something to my rotator cuff... Haven't been able to comfortably pull back a bow since February - rather inconvenient, since I was in an archery league that I had pre-paid for. Also, can't sleep on my left side.
I just went to the doctor for it last week, got some xrays done. He said I'll probably need to do PT before the xrays were taken. I have a followup appointment soon, so we'll see what he says.