I had my period, before my birthday the 29th it was gone but I had unprotected sex and took a plan be the day after. I than got my period again, but once it was gone I had unprotected sex several times, this guy did not cum any of the times, but Its been a month and nothing. I would like to hope my cycle is just messed up because after having unprotected sex I than got on birth control (the pill) and have been using it for a month but still no period. Help?!