Not due for my cycle for another two and a half weeks, started bleeding yesterday for about 4 hours then it stopped, started back up again this morning. I'm extremely confused. I took a pregnancy test last night and it was negative. Could this be implantation bleeding?? Or could I just be getting my cycle two and a half weeks early? I typically get it every 29 days and my last one was from 11/18-11/21. I'm freaking out because my boyfriend and I just recently broke up but we have been using the pull out method. I know, very irresponsible. How long should I wait before taking another test? Please help....