So I have taken Plan B 4 times within 7 months. so my boyfriend and I had protected sex last night, but I notice that the condom wasn't on. So I went into the bathroom and I notice that the condom... well it was inside of me. So I'm wondering if I should take plan B and how it will effect my body. The last time I have taken plan B was on June 8. And the last time i had my period June 16-19. (that was about 7 days early for my period). I know I need to start on birth control, but right now I don't have time to start on birth control. please help...