so i've taken my birth control at the same time evertday this cycle.. i've felt for a few days like it was about to start so me and my boyfriend decided to have sex to help it along... we were in a weird position that was uncomfortable and i wasn't extremely aroused either but we went for a minute until it bled. instantly i got really painful cramps and pretty heavy bleeding. ive never experience such painful cramps from this before. has anyone else ever been through this? any response will help ease my mind