What Are The Chances Of Pregnancy With Pre Ejaculatory Fluid?

my boyfriend and i aren't having sex until marriage. but lately we've done the whole fingering thing. the other day was the first time we were both naked. right now i regret that we let it get to that point, and he said he didnt ejaculate but im worried that maybe pre-ejaculate touched me down there. if it did, im scared i could get pregnant. is it possible? he said he didnt have pre-ejaculate either, but i think i felt something.