I don't know how exactly I hurt it, but after doing my chest on monday, I woke up and my left shoulder was killing me. Behind the blad where the rotator cuff is. I didn't lift on tuesday and wednesday. I did on thursday. It has not stopped hurting since tuesday. I wake up and it is the worst in the morning. It tends to fade away as the day goes on, but I can still feel it. Now I don't know how serious it is, but it hurts real bad in the mornings. I know this injury can be a real bad one to come back from. I leave in February and I need to feel fine by then. Any advice on how to heal it? Anything would be great. Thanks guys.