prevention?

hey ladies! so my bf and i actually went full on tonight and i ended up loosing my virginity. well i am completely new to all this except for what a friend told me several years ago. she told me to pee after and rinse yourself off and yo wash your seats and to stand as much as possible. we did that, but the thing is that we didn’t have a condom. i am on birth control but it’s the mini pill. my fertility window closed on the 29th, but i really don’t want to take any more chances. what are some other ways i can prevent getting pregnant? he made sure to pull out before he came but also i know that doesn’t always work. i am planning on getting a plan b tomorrow but what are the chances that it works or doesn’t? how should i make completely sure that i don’t get pregnant? i am just a little worried since we are both from very religious backgrounds and we are both religious as well, and so are our parents. we are both adults but we are still in college and trying to save up to get married in a year or so.