I have continuously pain in upper back side of chest from two and half months. My physician recommend ECG, CRP, RA FACTOR, CBC, ESR, chest and spine x-ray test. All Test reports are normal. He said it is myalgia or not a big issue and gave one nucoxia Mr. tablet daily for a week. It gave me that time relief but after stopping tablet again the pain arises and feel little heaviness and pain in left hand and shoulder also. I feel pain when laying on bed and sitting position also. I can't understand if all reports are OK then why it is happening ? I am afraid that is this heart related but my doctor assured that this is muscular only. If it is so then why it is not cured yet? Please suggest me how can this be cure.