Is there a possibilty I could be pregnant?!

Probably not if all you were doing is what you said, however pre-c* does have sperm in it so there is always a possibility that if he did actually penetrate you, but if as you said "he rubbed his p*n*s head a few times on my vag" then probably not!.
One Q, was the head wet & have sort of stringy solution on it while he was doing this? if so then see your gp.

thers like a 1% chance cos u didnt even have sex...
i doubt you will be and it takes some girls months .. even years before they get preg anyways and thats when there actually having propa sex not jst fl<in around. :L No u wnt be.. if you are then thats miracle.

common sense.