Probably over-paranoid that girlfriend could be pregnant

Hey I've been stressing out for a couple days....Well my girlfriend and I were messing around (both virgins) and she gave me a ha****b and i didn't ejaculate or anything but afterwards i felt on the outside of my boxers by my penis tip to check if there was any wetness,(which there was just a bit, precum presumably) just for the sake of curiousity. But anyways, i proceeded to finger her and now a few days later, i'm worried....I remember at least wiping my hand on my shirt/the carpet but I still can't help but be paranoid that she could get pregnant from that. I know i probably sound very immature but honestly I don't know what I'd do if she was as we're just going into college.

Thanks so much for any help that anyone can give me I'm probably being overly paranoid but any info that you can give me could at least calm my nerves...