I have only ever felt like this once before, and it was during my first pregnancy which ended sadly. But my boobs hurt, back is crampy, CM is abnormal from what it usually is, and I'm SUPER bitchy... Oooops. ;) My period is a couple days late, but since I was on the pill, even after coming off, it's been sporadic. Some months I won't get one, even if I know for sure that I've ovulated.