Me and my boyfriend have been having unprotected sex for about 6 months now and he went in me one night and on that night i started me period "well i thought was my period" well the next morning i went to the doctor to get the morning after pill. Over the past couple weeks i have been gaining weight very fast and my back has been killing me. The period that i had thought i started stopped after two days and then started right back up two more days latter, i am still bleeding now and it has been about 12 days and having very bad cramps and i am very bloated. My head has been killing me a lot lately and I feel very tired. WHAT IS GOING ON???? please help me!!!