Struggling

Hi guys, I am a freshman in college (I moved in 3 days ago) and I start classes tomorrow. I am having probably the worst transition of my life. My roommates are nothing like me and I feel like the 3 of them hate me and I feel so left out. I live off campus and all the events that happen on campus I feel so distant and out of the loop for. Since I go to a party school my roommates expect me to go party and get wasted but I'm just so scared of everything around me and all the people it's just SO overwhelming. I miss my friends and family and I want to go home so badly. I threw up last night and this morning because I'm so sick with anxiety it's taken over my whole body. I have no one to talk to here, I can't eat I can't sleep, I hate it. Please help