Birth control.

I’ve gone to the gynecologist before and got birth control prescribed and everything but I ran out and my mom has said I’m fine without it so i stopped taking it (at the time I only used it for acne and hormones) but now I have a boyfriend and we are active. I want to get back on it for safety but I don’t want to have to ask my mom to get some because then she’ll know that I’m active and it’s not something i want her knowing yet. I want to be safe though so in order to get more do I have to have. A parent call the pharmacy or ?