My doctor advised, it was a pulled muscle. No problem on mamogram. The pain increases when i move or pick something up. He gave me bextra, but it made me sick. Is there an exercise to make it stronger. Please take in consideration of large breasts. The pain does sometimes reach under my breasts. It doesnt make it hard to breath, but any sudden movements, make me curl inward. Ice and heat help a little, but it always comes back… Any suggestions, would be greatly appreciated.