I got my period on January 29 and experience severe cramps. I am on Ponstan medication due to dealing with severe cramps. I am now on Marvelon birth control, too, to help with cramps and Mittelschmerz pain. My boyfriend and I did sexual things on the 21 of January. He ejactulated and touched it and the fingered me later on. Today is day five of my period, and I am no longer bleeding at all. Is this a withdrawal period, my real period or is there a chance I could be pregnant? Please help immediately.