I had breast cancer about 10 yrs ago, and had chemo and radiation on left side, for 4 days now I have had a pain under my left shoulder blade, that goes around under my armpt and under my left breast, It really hurts so much I can barely get comfortable, I have had cracked ribs from cough and this feels alot like thta, but I was wondering if there is anything I shoould be concerned aboy I do also have a leaky heart valve. Thanks so much oh never mind, I don`t have a cc.