Advice? Sorry is this is stupid 😥

I've been on Birth Control for six days and i've had protected sex twice since I started. I just, I read somewhere that if a guy doesn't know how to put a condom on properly then you can get pregnant. He insisted that he knows how to put one but i'm paranoid he doesn't and that I'll end up pregnant or something. I know this sounds so so so silly but I honestly don't know much about this kinda stuff becausd they never taught us in school and I live with my dad, so I don't know how to talk to him about this kind of stuff. Can someone giveme slme advicd and skme knowledge please? :)