I think I have ADHD, so I took two tests online, and received the scores 88/100 and 86/100. This means that I probably have serious ADHD. I want to tell my parents so that I can get real tests done, but I don't know how to bring it up. my grades are slipping, and suddenly I am receiving D's and F's. What should I do? (I'm 13 and in JH school)