Ok my girlfriend is staying the nigh saterday and says shes ganna give me a BJ but she wants me to finger her in return and im still a virgin and havent ever fingered a girl either, so how do i finger her without making her have a orgasm to notwakemymomup

Well, think of it this way. she wants to give you a BJ, would you want her to do it in a way to where you wouldnt orgasm? she probley has different plans. just go along with whats planned and tell her to keep it low.. maybe try kissing her to mute the sound. because doing it just because is only going to tease her and she's gonna egg you on for more. heat of the moment ^_^
have fun