Need to ask my mom for birth control pills

So I’m 17 years old and am not sexually actively nor do I have a boyfriend but I’ve got really bad cramps and want to suggest birth control to my mom as a way of coping with them. The thing is my family is very religious and I don’t want her to freak out about me ‘taking the pills as an excuse to fuck a bunch of dudes’. Does any one have any advice on how to approach the subject?