MrsHamstra: one time, I went to my OB for an annual check up, and complained to her about my boobs being way too sore. That was also one of my shorter cycles, I did not realize I was getting close to AF. She also told me it could be caffeine or other things... However, I noticed with time, my boobs were not sore anymore, and that is when I started spotting before AF. I feel like it's actually the progesterone level that causes, among others, symptoms like that before AF. I never stopped drinking coffee until very recently, actually I was drinking more of it, yet my boobs were painless... I'd rather have sore boobs anytime! My cycles were more regular and definitely ovulatory... Now, last cycle, I took Clomid, and my OB called to say it was borderline ok for ovulation proof, and no pain again. Cycle before, I did not ovulate at all...