Well, I'm new to the whole Birth Control thing and I missed a Thursday and Friday pill i took them on saturday then took the saturday and sunday pill on sunday like it said i should. But then i recently got this bleeding thats really heavy, I had unprotected sex during the time i missed my birth control but i highly doubt i am pregnant. I was just wondering, if it was breakthrough bleeding would it be lighter? cause this is really heavy almost like a normal period. My last period was on Jan 2nd/08. So i was just wondering if anyone knew what it was.