Only 3 (or 4 if you count BJ). I really wished I had fucked more girls though. It'll probably going to be a regret of mine at some point. At least I had lots of sex with my ex so I'll always have that sweet memory to come back to.
I've had sex with 3, possibly 4, but I can't say for sure what happened with the fourth since I blacked out and woke up the next morning in her bed, both of us naked.
Two were one night stands, the other three I had been in (still am in) relationships with.. and I ain't the cheatin' type. Although by the way this current one is heading down a slippery slope, that number could be rising in the coming year. Bummer.. kinda.