As advised by my doctor (due to extremely low iron levels) I skip my sugar pills aka getting my period every time. Around about every 5 months I will get breakthrough bleeding. Approx. 5 weeks ago this breakthrough bleeding occurred. Around about when it was about to end I had sexual intercourse. My period then came back. I have been having intercourse once a week since and my period has not ended. At the end of each week it begins to nearly end however after sex it comes back. Meanwhile I am continuing to take my active pills. Is the sex bringing on my period? Is my pill just inactive? Why have I had my period for nearly a month now? I may add that the period is not extremely heavy however can not go without sanitary items.