ive had this almost moving chest pain for a few months. it seems to be muscular because it hurts most when i press on my ribs or into my boobs. right now the pain is in the upper right area and in my lower left boob(again more rib pain when i press here) ive had blood work, ecg, xrays, and was at the doc 2 weeks ago, at that point the pain was fully under my left boob, and she said it was a pulled muscle. i havent lifted anything heavy since n why would the pain move if it was a pulled muscle. for the most part it is just uncomfortable, but hurts when pressure is applied, and is quite constant. im not too worried about my heart as it doesnt increase if i extert myself and it would be one long heart attack..just wondering if this sounds familiar to n e one else? possible costochondritis?