For those who take Concerta... ~pinky and the brain

I'm an 8th grader and I take Concerta. And I think it's giving me some side effects that I DO NOT want at all. First of all, I was diagnosed with the totally fake ADD and I had to take Ritalin up until last year when I chose not to since sometimes, I'd get a chest pain, and I'm too young for those! Now here are the side effects from the Concerta: first off, it's getting harder for me to understand people, like what they're talking about. That's never happened to me before. And the same thing with reading things in books. Not to mention that even though I take 36 mg every other day because the stupid doc increased it just because I sorta insulted him cuz I wanted to, it's getting harder for me to store songs that I want stuck in my head and to even form words while speaking sometimes. And here are some other side effects: I have this weird problem with uncertainty about some things. And it's getting increasingly more! I like, know stuff, but I just can't seem to know whether or not it's right. My mind's almost constantly in Scholastic Bowl mode! How many of you take it??? Do you get these side effects sometimes??? If so, please tell me. Do you think it should be taken even more sparingly????? It lasts about 12 hours, and I think that's too much still. Pleeeeeeeeeeeaaaaaaaaaaaaaassssssseeeeee tell.