Can upper back/shoulder muscle pain cause chest pain? been 4 days. i've had an ecg & cardio blood test which was fine. what to do to feel better?

Continue follow up: It ultimately comes down to obtaining the accurate diagnosis. It is good that your initial cardiac workup has been negative. I would encourage you to continue with your followup to make sure it is diagnosed and treated; still multiple possibilities.

Check with doctor: If NSAIDs, topical ice or heating pad do not help this pain, you should consult an orthopedist .