Talk to your parents tell him that you want the vaccine. You'd feel more confident about returning to classes having it and you trust the people with medical degrees more then opinions on facebook. When you mom ultimately refuses and says that you are disrespecting her tell her that your post 4chan green text on reddit so even if vaccines caused autism, which all reputable sources say they don't, they can't possibly make you any more autistic. Also that when your 18 you are going to leave home and in all likelihood move across the country change your number and she will never hear from you again, that years of hearing their stupidity has made you terribly ashamed of being associated with the family name. Just my 2 cents