chances of my being pregnant?

i’m ovulating today, and i had unprotected sex two days ago and i *think* he came inside of me because when i went to the bathroom after there was cum in my underwear (could’ve just been cause i was wet but i don’t think so...) i’m supposed to be ovulating today (or yesterday my apps have been saying different things) and i looked it up and sperm can live in the vagina for 5 days.. what are the chances i’m pregnant