i undergone a opertaion in dec 2012 in which doctor operated my femer and inserted a plate with 7 screws after 4 months the puss starts to built on my outersurface of skin where operation is done, after that i undergone another operation in which doc clean my plate , the bone is healing but now again the puss flow started in july 2013,,,,what should i do,...which things i avoid like food n all