They ruined half of my teen years

This story happened 14 years ago. Nowdays it does not seem like it has affected me somehow, but maybe it did. Maybe my anxiety, my social phobia, my overthinking is also a result of this bullying. I was 10 years old. A normal 10 years old girl, not too fat nor too skinny, just an average kid with good grades and a cute little face. My classmates somehow didnt like me, they couldnt accept me. I started attending this class 3 months later than others, because I came from another school. I had only a few friends – the unpopular kids, the shy ones, or the poor ones, or the romani girl who was made fun of because she had a darker skin. These kids never defended themselves if someone was mean to them. The popular kids were mean to them and to me too, but I fought back. I was a little rebel and they hated me. One day we were getting dressed after sports lesson. My shy friend, who was kind of neurotic and weird was wearing knickers with telletubbies on. They yelled “telletubbies” and pointed at her, to make fun of her. I wanted to defend her by drawing attention off her. I pulled down my pants and showed them my knickers, saying “its not telletubbies, its dalmatians”. At that moment one of the girls started yelling “she pulled down her knickers”. I didnt. The knickers might have slided about 1 cm down, but I caught them, so they didnt slide down further, and they really couldnt see anything. I told them this, but they kept on yelling their bullshit and started to spread a lie about me. They told the boys that I was showing them my private parts on purpose. The teacher didnt believe me either. I went to a different school that year. 2-3 years later, we were teens, and my new classmates started going out more, and became friends with my old classmates. They told them about this and told them many other disgusting lies about me. Some of my classmates ran to the other side of the road when they saw me, screaming “infectious”. My classmates didnt believe that I didnt pull my knickers down, and they wanted me to admit it. I wont admit anything that I havent done. I had almost no friends at school. I wasnt going out, because I didnt want to meet my exclassmates, I didnt go out because I had no friends to go out with. Everyday after school I went home and spent all day locked up in my room, listening to music. My only friend was a girl, 4 years younger than me, who was also bullied. Then when I started using internet in 2007-2008 I met some new people, like my boyfriend with who I am in relationship for 8 years. I made friends with more people at the university. Now I have a degree, I have a job, but still I am an overthinker, and sometimes I am going crazy, because I worry about everything, about the future, about my carreer, my job, but even about calling a stranger. What if they will not understand me, what if I will say something stupid, what if I will make a fool of myself in front of someone. When a friend on a rave is coming to me to hug me, I just dont know how to react, because I dont dare to touch them or to hug them too tight…But I go out, I work, I force myself to do stuff, because I dont want to let bad experiences from the past ruin my life, but when I meet negative people, I start overthinking. If they are mean or just dont like me, and why, and maybe they dont like anyone, or maybe they are just angry, and I start feeling like an idiot who is incapable of doing anything right. I am trying to cut out negative people like that from my life, because they just drain out all my energy and will to live. I do not want to interact with such people.