i had sex two days after my last period ended in october, took plan b within 24 hours of having sex, and the condom didn't break ( used water test ) a week later i had light bleeding for a couple days, it is now november i haven't had a period, today i felt crampy and now im having dark bleeding, well i think it's bleeding and i still have some cramps, i haven't thrown up and my boobs do not hurt, does anybody have any comments, could i be pregnant?