brown discharge! PLEASE ANSWER

hello! so i’m 20 days late, and my cycle is pretty irregular, it’s never on a consistent day. anyways, about one month 1/2 ago i had a sexual encounter with this guy, and i’m not too sure but we were both nude on top of each other, nothing went inside there. no sex. but there’s a possibility his pre semen might’ve went inside. at this point it’s the waiting game, today i wiped and i’ve seen brown discharge. with a little bit of red blood. it was gooey, and gross. what does this mean?