Extremely shy. Going to be a sophomore Next Year! Going to a new school!!!?

Okay. So, I am an extremely shy 15 yr. old girl. I Had like 6 really close friends since the 6th grade. Made more through the 8th grade. My 8th grade year was bad. Like, I was the Nerd! I was extremely shy! And still am! I put up some sexy pics on myspace, that was a rumor. I was a prostitute . It got out to 1 teacher. But, I denied it. (Thank goodness, I'm good!) She believed me. It was dropped. I have two close friends that I talk to now. Because the rest are just to conceited, talk about clothes and there boyfriends plus relationships. Tells, me that I need a makeover and Need to get a boyfriend. (I am an ugly duckling)! But, the rumor sticked until the 9th grade. Which, This girl thought she knew everything and was a popular wanna-be. I hated her so much. She hated me b/c , I was smarter then her in the 7th grade and got all the good comments from the teachers when she never did. Anyways, The popular girls. Look at me now as a fake shy girl who's a slut. Because Of there friend who moved. See, This one girl. Thought I was flirting with her bf, in the 8th grade which I wasn't. We were just friends and still are.(Don't talk to him that much). She cursed me out on facebook. The next year. For adding her as a friend and calling me a slut/prostitute. b/c of pictures which every girl put up at my school. Then, I Took it to the next level with her. It got real ugly. It was a fight on facebook.Now, her friends (popular girls) don't like me. And I'm a nerd to them. I'm always the target in jokes. I have to talk trash to them on facebook . To get them to back off of me and my friend stephanie. B/c. They say, I talk weird, and sound like a mouse when I get really super nervous at school. Around them. I do not have so much of a social life. Mom picks out clothes for me. Which are wayyyyy to big. Can't wear make-up. Bad acne(clearing up since 8th grade). Braces! They just hate! What should , I do? I'm going back to the school like always. So, In junior year. I'll be back to that awful school full of fakes. Including me. Sometimes.