Feeling overwhelmed

Hey

I am so overwhelmed right now. I have come to a school far away from home for the first time. I get home sick often. I am super stressed about my studies. I really don't feel that I have chosen a path which is interesting to me. I studied really hard for my exams but still my grades managed to suck somehow. I have really bad roommates and I hate living in this apartment. I am scared of moving out because I don't know what kind of people I will end up with again. I really want to go back home again but I know I can't. My parents told me I could come back during the holidays. I really don't know what I am doing with my life. I just feel like this is the worst decision of my life. I don't have many people to talk to about this either. I don't want to tell my parents because then they would worry about me. I am literally crying everyday thinking about my situation. What do I do? Please help me.