Let me know

I have my dermatologist appointment on the 22nd and my skin has been breaking out and I’m going to ask her if she thinks birth control will help. I also wanna get on it because I’ve been wanting to lose my virginity to my boyfriend.

Saying she does prescribe birth control (the pill one) would I tell her what if I start being sexually active. How would I take it? Will it be the same or would I take 2 or something?