I agree with Sassy, if there was no penetration and no seminal fluid on your fingers, the chances are very slim.
good luck
It is unlikely, since it was your finger, and you say there was no seminal fluid, I doubt it. She can buy a pregnancy test to find out however if she misses a period.
definatelly it could be possible....when you are in the intercorse with your girfriend is possible the release semen ...remember that with the gel that men's usually release some recidus of semen could be in it. just pray