I'm 15 and I have been wanting birth control because my boyfriend and I have been sexually active (yes I know I'm 15) but my mom won't let me get it until I'm older. She has no idea that I'm having sex, I just told her I wanted to get it for my periods because they are pretty bad. We do use condoms & we are extra careful but I'm absolutely terrified of something going wrong and getting pregnant. Is there anything I could do?