this is weird but i’m so anxious

so my brother (21) slept in my room last night because i was at my friends house, when i got home this morning there was a tissue on my bedside table which was sticky and smelt of something i have never smelt before? i assumed it was cum and he had forgot to move it before i got back. i put it in the bin and i held it with the fingertips of my right hand. i forgot to wash my hands and i’m not sure if any cum got on my fingers but a few hours later i decided to finger myself, i only just remembered about the cum thing and i’m wondering if there’s any chance at all that i could get pregnant from it because if i get pregnant me and my brothers life would be over because ITS MY BROTHER and we are both in relationships. also i’m 14. IM FREAKING OUT. i know it’s really unlikely but can someone please tell me if there is a chance at all. my period isn’t due for like 3 weeks so i’m gonna be anxious until then😭😭

edit: OMG i think people think i’m into my brother. i’m not! i fingered myself for my boyfriend and i was grossed out at the cum tissue thing. i’m equally as disgusted by this as everyone else who’s commenting. my anxiety is just through the roof right now. i’m sorry if this story freaks anyone out