last night I was making out with my boyfriend. he took my clothes off, did oral and he began humping on me but he had his boxers on; then i put my panties on. I did the same thing to him - unclothes him, oral, humping- (with my underwear on) . We took each others underwear but never inter course after, the only thing is that his penis slightly touched my vulva but never enter me. right after, we put all our clothes on, and began touching things like objects, and he took me home, to sleep. there was no intercourse between us, as in him directly in me.. but is there any chance I could be pregnant just by humping with my underwear on?