Should I get Birth Control?

I'm 18 right now and have just started university and live on resisdence. I have also become sexually active.

Where I live I can get birth control fairly easy and for free. I always use a condom but I have been thinking about getting birth control. The only thing is, I could never tell my mom that I need birth control. I'm not comfortable telling her I am sexually active. I could get it without telling her but I feel like that is a big medical secret to keep.

Any advice?