Birth Control

I think I enjoy having sex and I want to have sex with my boyfriend once or twice every week or whenever we hang out , but I am too young (turning 22) to be pregnant. Also, I’d freak out and stress after two days of having sex.

*protective sex by the way : condom AND pulled out method at the same time.

I am thinking about getting on birth control pills. Can someone tell me how it works and where can I get it? Do I have to get tested for specific birth control pill?