Ok, I started my period on December 26 (late Christmas present I suppose.) Anyway, my boobs always hurt pretty badly about a week before I start. My boobs were hurting a week before and everything was normal until I started having really bad cramps. I usually don't cramp until the first day of my period. Then, my period only lasted 5 days instead of the usual 7. It was still on time, and I have a very regular 30 day cycle. Its been about a week since my period stopped, and my boobs hurt even worse. They hurt on the outside and kind of toward the top of my chest. I had unprotected sex with my boyfriend before and after my period, but I don't think I'm pregnant because the timing is all wrong. I just don't know what my body is doing! Does anyone know what it could be?