I'm 26 years old and since nearly 5 years ago I have got an injury in my back. I was at gym doing the exercise called "Incline Dumbbell Flyes" and all of a sudden when I opened (streched) my arms I felt an extremely sharp pain near the muscle (on the right side) called "teres minor muscle" and "levator scapulae" (I don't know exactly whether they are the right muscles but anyway I feel the pain near of them). I really don't know what more I could do in order to alleviate and cure this pain. It is killing me. Please, help me.