I have had moderate to severe upper back pain. Between my left shoulder and spine I am very tight and if I stretch my neck to the right I feel a tearing or pulling apart sensation in that same area accompanied by a cracking sound which seems to give releif for that second but tightens right back up. The pain sometimes radiates around to my chest. My left shoulder is also making alot of crunching noises when I move it I feel lik it needs to be pressed down or something. I am going crazzy because I cant figure out what it is. I was given flexril and that didnt work and cant take nsaids because my stomach is all messed up. Any Ideas????? Help???