Hi, I m 21 and have been on birth control since I was about 15, to regulate my periods and to control my cramps. I have had two periods this month. I thought that my second period was my boyfriend breaking my hymen during intercourse (I m sorry for the inappropriateness) but I m still bleeding heavily, after completing my cycle and I m having cramps in my lower spine. Is this a second period or is it something serious? My cramps normally, on a scale from 1-10, are a solid 10 and these cramps now, are an 8. What could be happening?