I have been having chest pain for almost three days and Have been it is just my muscles. I can not figure out what I would Have done. The pain started at the bottom of my sternum then moved to the right side of my chest and now is going to my left side. But is still on my right side. It is tender to touch. My chest feels heavy if I walk or move more then 10 min. And my back is starting to become sore. EKG,chest x-ray and blood test are all normal. Could it be anything else. My pcp said it would take a while for the pain to go away and nothing helps.