Trying to conceive at 21

Hey guys I’m new to this app and i wanted to ask a few things , I’m really curious what BFN and BFP and AF means, I figured the BFP was a positive pregnancy test but what is the BF? And any other acronyms I might need to know would be helpful too. More importantly, I’m in a serious relationship and although we’re not “trying” , we also aren’t trying not to get pregnant if you know what I mean. Anyway I thought maybe I could hear from some other women around my age that have any tips on trying to conceive and on how I can talk my boyfriend into starting to try because idk if he wants kids just yet.. I know He wants kids in the future but I think I might have some kind of problem getting pregnant because we don’t use condoms and I’m not on any birth control but I never get pregnant. I don’t want him to say hey let’s try , in 10 years, but I can’t even carry a baby because of other complications, cervical cancer runs in my family so I want to have kids sooner rather than later . I also had a miscarriage last year, we tried for that one, but afterward he didn’t want to try anymore ... i don’t know if maybe he’s nervous I’ll miscarry again but if that’s the case we should talk about it right? I just get nervous talking about it with him ever since he wanted to stop trying after the miscarriage . Sorry for the rambleing I just literally have nobody to talk to about this stuff . Any and all advice is welcome ladies , thanks for listening.