Boobs hurt please help

So my boobs have been hurting really really bad and this never happens to me I don't think they are growing and its not period symptoms because I don't get it for another 2 weeks it hurts to even touch them or wear a bra and still hurt even when not wearing a bra what could this be I doubt I'm pregnant because I've been on the pill for over 2 years but I do have unprotected sex with my so about 4 times a week what could this be please help