Just wondering if anyone has experienced similar. I am 38 and breastfeeding my two year old. About a month ago I started getting a really severe pain in my left boob, it is if I run, if I lie on it, brush it etc and if my son nurses in certain positions. I have no noticed a lump. Could it be a blocked duct or something? There is a significant rate of breast cancer in my family so I am freaking out a little bit but the pain and lump seem to have appeared very quickly for that?