Losing My Virginity!!

Hello! So, I’m planning on losing my virginity tomorrow and I’ve been like reading a lot about it. I’ve been a little scared of getting pregnant because my mom raised me telling me horrifying stories about sex and pregnancy but I feel calm since yesterday. I started birth control a week ago and we’ll use condom of course but like I’m an over thinker and obsess about everything. So like if you guys have any advice for a first timer please feel free!

Thanks:)