I am having severe sharp pain on the top back and side of my right shoulder! Followed with my arm and hand being very weak. And my first three finger tips having a numbing sensation. Been going on for a couple months now. I believe it started when I being a "dumb ass" tried to hold up a garage door on which the foreign object sensor was not working. But when it first happened my arm was just sore for a while. The pain went completely away. A couple weeks later I woke up with what felt like a small painful knot in my muscle on my shoulder which proggresively got worse from there!! Somebody please help . I have no medical insurance and very little money. Can someone please tell me what this may be!