Is it possible to get pregnant only through fingering? we just finished having sex and i was touching my penis that had a bit of pre-cum, then fingered her. i don't know if it is possible to get pregnant this way, when your fingers have semen/sperm.

Really really rare: I can not say it is impossible; it only takes one sperm to get pregnant but the average ejaculation contains millions of sperm and usually pre-cum has none, but in rare cases it may have a few. It is very very unlikely but I would try to be more cautious in the future... See https://americanpregnancy.org/getting-pregnant/can-you-get-pregnant-with-precum/