Scared to have sex??

I'm 19 and I'm actually scared to have sex like penetrative sex not oral or anything like that I think it's because I don't want kids and I have never been on birth control and I'm not going to even try to have sex until I am on bc but I don't want to get pregnant and I know that even if you are on bc you can still get pregnant sometimes how do I deal with this btw I don't have a boyfriend and I'm not sexually active but I'm scared of getting in a relationship because I know eventually ill have to have sex and I really don't want to have kids but things happen sometimes how can I be ok with having sex if I'm scared of getting pregnant when I don't want to do that?

Edit it's not so much about me being afraid to have sex I'm fine with that. it's just I have so much anxiety around the idea of possibly getting pregnant, I really don't want kids and I don't know how I could have sex and not get pregnant because even if your on bc sometimes sh*t happens you know?