Post radiotherapy rib discomfort

Hi all, haven't posted for a long time,now approx 9 MTHS post radio,two months ago I felt my top rib,same side that was treated felt bruised and tender,upon self examination,my top rib felt like it was sticking out as if was been pushed out, eventually wearing a bra became uncomfortable and the tendernes went from were tattoo was under arm,about half way down boob,and continued to underneath the boob,anyoneone else experiencing this?