wlw safe sex questions

ok helllllloooooo am 16 and have sexed like uh…7 girls, been out as gay for two year.

i have had sex with a boy one time (not good obviously)

my current gf and i sex and i haven’t had sec w other people in three months (we’ve been dating for 2)

yuh girl knows what she’s doing so that’s not the problem but i’m just wondering if i can do anything to make sure that shit we do it healthy and safe because i don’t wanna mess her health up ALSO LOOK

she is short one ok