On Oct. 2 as I was adjusting my shirt I felt a horrible "snap" in my upper back (above my shoulder blades). It hurt really-really bad and I had to take small shallow breaths until the pain subsided. I went to the walk-in clinic at my spine dr's office and the doc who was working the clinic that day thought I had snapped a muscle so he put a "numbing" shot (short-term and long term) in the muscle and sent me on my way. The shot did not help at all so I made an appt with the spine doc and had two ct scans done. I have been experiencing numby-tingly feelings in my left arm below the elbow, in my left breast, pain from my spine across the back of my shoulder and down to the left elbow. I have been to the ER twice, called the doc back for more tests and am now waiting on a call back from the doc's office (if that ever happens!!). Does anyone have any idea of what this may be or has anyone experienced anything like this? Thanks for all the help and advice....I really need it.