I am feeling discomfort in my breast and a slight pain on the left side of right breast. I had the same issue last month. It was due to hormonal imbalance as my gynaec told me it was due to pms and the pain will be fine once I get my periods. I am having pcod. But now one week after periods I am having the same issue. Earlier my nipple (right) used to hurt and I took medicines for the same as per the suggestion of my gone but know I am having a sort of discomfort and pain in the left side of right breast. A few days back I observed an increase in size of both my breast. May be due to hormonal imbalance. I took sn-15 and m2 tone tablets and many other for earlier pain and now I am not taking any medications.