Unpopular, uncool, cliche

I'm your stereotypical nerd, the kind you see on movies and tv shows. I have around seven or eight friends, that's all I've ever felt I needed, and a boyfriend who's included in those friends, and I have a perfect older sister.

I don't fit in with what our society thinks. I'm different, out there, but not on purpose, it's just who I am. I'm introverted, and I hate parties. I'm the smart kind of nerd who doesn't even like school.

I'm a sophomore, and I'm in ap world history, but nobody in my class likes me. There are eight people and I have one of the girls my number so we could make a group chat, but she keeps "forgetting," but I know she doesn't want to add me. She told my sister cause they both play soccer, and apparently everyone on the soccer team says bad things about me. I'm not a bad person, I'm just different. I'm not mean to people unless they're mean to me, and I've never really had to be mean to people. According to my sister, I "come off as mean, rude, uncharismatic, and unfriendly."

What do I do? I'm really anxious about this, to the point where I feel sick and I can't concentrate. I've asked my friends but they don't understand cause they already know me.