Could I be pregnant?

May I first ask to save any judging and any eye rolls for a different time. I am scared I could be pregnant because I'm late by a day in my period. I am a virgin and cum hasn't gotten near my vagina however I have been fingered and I'm scared precum could have transferred... We didn't do this on ovulating days because I'm the paranoid type (can you tell? Lol) anyway any advice is perfect!