Contact you nurse girls,they will be able to advise,we can all guess what it is,but to be honest you need the answer from a medical professional,going to your GP may be a wasted journey,they will just tell you to speak to your surgeon,as he is the breast specialist,hope you get some answers,try not too worry we have all sorts of little glands and tissues in our bodies that can flare up,the nurse will be able to help Im sure,even if it means getting you an appointment to see the surgeon to check this out.xxx