It's the second week of school and I already feel like I can't go on any longer. I'm 14 in 9th grade and I can't stand it anymore

Every time I get home from school I can't think about anything else but "I have to go back there tomorrow", it's never "Finally, I'm home and I can relax" or "Almost the weekend, time to play video games and sleep in". It's always the dread of going back to that place that haunts my mind and I can't stop it, No matter how much I try to distract myself I can never stop thinking about what will happen there, specifically negative: "They're probably gonna bully me" "I'm so ugly, they probably all talk about me behind my back" 

Funny thing about this is I actually WANTED to go back to school, for my entire 8th grade I was online schooled but I wanted to go back into the world, see my friends, talk to people, get a diploma and whatnot, oh how wrong I was, my old friends aren't even there, I still have some friends, but even then I have trouble communicating with them.

The only solution I see here is going back to online school, but I can't do that without my parents of course, and it's only the second week of school, after all the preparations they have done to get me back in school, it would only be selfish of me to ask such a thing wouldn't it? I can't help but quietly tear up just thinking about it, I just want to tell them about what I think but what if they don't accept me? What if they get angry? Someone please help me, I recently started thinking suicidal thoughts but I don't want to put that burden on everyone around me. 

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I have nobody to talk to but some people on the internet funnily enough, I just feel like nobody would care about my feelings, maybe my parents but something in me just says I can't.

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I feel like I'm trapped and I can't do anything about it, please, help me and give me some advice