sometimes you do, sometimes you dont. but if you do, its not too much. it depends on whether your 'cherry' (your hymen) has already been broken. many girls break theirs before they have sex, by playing sport or using tampons etc
lol poppin ur cherry..ya...but some ppl bleed the first time and some ppl don't..I guess it might help not to if u masturbate alot n stuff. at least that's wat I heard