i think i got raped and idk what to do

sorry if this post is doesn’t make sense i’m just really freakin out rn. so for background information : on thursday night i had gotten back from a beach trip with a bunch of people and i know for a fact i did not have sex with anyone while i was there, and the last time i DID have sex was weeks ago and we didn’t use a condom. i was just using the bathroom about 10 minutes ago and i noticed something was off while i was wiping, like i could feel something inside me? i was confused so i pulled it out and it was a condom. i’m so fucking confused right now because i know for a fact that i did NOT have sex with anyone while i was at the beach, i didn’t get too drunk and forgot if i fucked someone, i haven’t had sex in weeks and last time i did we didn’t use a condom. is it possible i could have gotten raped? i’ve gone over every possible scenario of HOW a condom could’ve made its way inside me without me noticing, my friends kept asking me if it’s from the last time i had sex but i know it isn’t. sorry i’m just really confused and freaked out and i feel fucking sick, did they do it to me while i was sleeping????????