hi, I am male 26, I want to ask about my nipples 10 years ago,one of my friend pinched my both nipples very hard, at start they both were full of pain and I also noticed lumps inside both of them , I started pressing both of them , as a result they both got hollow in the centre and lump took a circular position around them , my both nipples are swollen , and still pain sometimes, and I also have male boobs, what is the treatment?