Can i get my Girlfriend pregnant from precum on my finger or mouth?

Hey, Me and my girlfriend were messing around last night (wednesday night) and she was giving me a hj. and then i was stroking myself while she was trying to get comfortable. then i started fingering her, and i didn't even think that i had precum on my hand, and i might of had some on my finger. then i started to give her oral sex, and she gave me oral sex, and we started kissing (i know thats probably disgusting) then i gave her oral sex again and i thought there could be precum in my mouth too... Is there a chance that she could be pregnant from this? The last time i ejaculated was Tuesday night, and i've urinated around 3-4 times total on Wednesday and Tuesday all together and i was hoping that would've killed off any sperm and my precum could be harmless? Please help, im really worried.:(