I was raped..

On Saturday night i went out with my friends to celebrate his birthday and got really drunk when we left the club everyone drove back to his house to get our vehicles .. i blacked out and woke up with his friend (who’s advances I’ve denied ) inside of me . I just pushed him off me grabbed my keys and ran. My boyfriend doesn’t know but it’s eating me up I’m pretty to myself so i dont have any outlet besides this it’s just really hard and idk if i should tell him or take it to the grave i wouldve never done something like that i just don’t want him to think I’m used or dirty because of what happened to me . Idk if it’s rape i cant remember anything but waking up scared , confused and in pain . Thank you in advance i just need someone anyone to talk to before i break down . I feel like he took a piece of me that night i can never get back ..I’m broken