I am on birth control pills right now, and have been on them for about two years. One night I forgot to take my pill. But the next day I took it. Then the same night I took the missed pill I took my other pill at the right time. The third day after that I was late on taking the pill but took it still. Now for about 5 days I have been bleeding. It's a week before my actual period and it is freaking me out. 
No cramps, just dark (sometimes darker then other days) blood. I shouldn't have to worry about being pregnant because I don't remember having sex those nights. Also I have missed pills before and this hasn't happened..Any suggestions as to what this could be? 
I need my worries  put to ease. :(