If you've tried both with no success and the pain is in your chest and left side, then I'd suggest you see a doctor. Without having more details it's hard to say, but a lot of problems in the back or neck are deferred to other areas. For example, everytime my neck goes out, the neck itself doesn't hurt, but my right arm, shoulder, wrist, is affected badly. I just don't like the chest pain part of what you said. How long has it been going on? Are you tingling or numb at all? Again, I would probably suggest a visit to the doctor just to make sure. Good luck to you :)
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