i m 32 years old and ductal carcinoma of the left breast, tumour size less than 2 cms, in jan 2007. lumpectomy was done followed by brachytherapy 8 days and external radiation for 30 days and 6 cycles of chemotherapy. once chemo was over, i had severe reactions in the breast,supposed to be post radiation effects which got cured in 15 days. . i m still menstruating and taking tamoxifen 20mg od. now after 2 1/2 years, i feel that the treated site is giving some mild discomfort. there is a hard fibrosed area-the surgical site. sometimes the skin is stiff and shiny and sometimes it is normal. there is mild pain . what is it and is it to be worried