Worried about first time sex with a guy virginity?

[Micky]

So I have had sex with a girl before ( only fingering) and I bleed alot the first time like a lot, like when you first start your period. did i lose my virginity? the guy i am getting ready to have sex with is a large guy and i am worried it will hurt because i have never done it with a guy before, and i don't want to bleed like that during sex with him i am worried he will think i am bad at it because well i sort of don't know a lot of positions and stuff, lol jeez, anyway Can you guys help me out i am freaking out because i want him to have a good time and for us both to finish