I've been experiencing painful and sensitive nipples for almost 2 weeks. I never get ovulation/pre-period breast pain this bad. It's always very mild and more towards the start of my period. This time it happened like 11 days ago and it's gotten worse. I don't know what it could be as I've eliminated pregnancy (took one today and negative). The slightest touch will really hurt. They've quite erect (sorry for TMI) and sore. I don't know if this is anything to do with it, but I did have blood streaks a couple of days before the start of soreness. Any help appreciated.