I have is mostly sharp
, but dull at resting and it wraps around to my chest
(imagine drawing a line from the bottom of your scapula underneath your arm and to your pectoral muscles near your armpit). Occasionally I have pain in my upper arm too. Weird thing for me is that the pain is REALLY sharp if I take a very deep breath in or if I yawn. I also experience pain when I drive, put my arm behind my back, lay on the opposite side (not sure why that is), lift anything over 2lbs.