So I’m completely worried right now and don’t really know what to do..

i probably sound like an idiot to most of you ladies....

but anyway, i was with my boyfriend 8 days ago and he was fingering me. However, I’m worried that he hand some precum on his fingers when doing so... i was around the time of ovulation considering i had a positive Ovulation test about 10 ish days ago. Well I’m currently 5 days from when my periods supposed to start and am freaking put over the chance of possibly being pregnant... it was only precum so i think that has less of a chance then if he were to fully ejaculate. But I’m so scared. Could i be? What are the chances? Has it actually happened to anyone before...