Hi, K I know this has been asked a hundred times but everyones version is a little different and I'm a little confused. My period started Sept 17th and the last day was Sept 21st. I had unprotected sex on the 23rd. I got plan b maybe 30 hours after.. so on the 24th is when i would have taken the pills. By sept 30th I started spotting which then seemed to have turned into a "period" lasting 5 days by the time the spotting was totally done, but it was quite heavy. I'm not sure if that is an indication that I ovulate early maybe and so the pill caused my period to be early? Because it was just as heavy as my normal period is. If I wouldnt have taken plan b i would be due for my period Oct 16th. Should it still come aound then or should i have started counting my cycle from the period that came sept 30th judging by how heavy it was? I'm just confused! the info says it can cause spotting not a full on period! which mine came like 16 days early!! thanks in advance!