I received a 2011 flu shot exactly a month ago and the pain in my left arm is so bad I am not sure if I need to see a MD or Orthopedic Dr. My shoulder, arm to my elbow and even into my lower arm hurts so bad I cannot raise it, cross over my chest or put it behind my back, it even hurts into the back of my neck. I cannot sleep, if I lay on it I wake up in pain, if I use it to much at all it hurts really bad. I have tried heat, moving it more, ice, even pain medication such as tramadol and its still hurting extremely even as I type its painful. ughhh what should I do or not do?? any suggestions?