Birth Control?

Okay so, My boyfriend and I have been dating for a year and recently started being intimate. We've used condoms but we want to be extra careful. My mom is very against sex before marriage and I tried to talk to her and it ended very badly. Is there any way I can get it in my own? Or somehow use something similar? Im new to this so I honetly dont know how any of this works 😬 Someone please help me. (Im 17)