I started out with 18mg for the first week. Then to 36mg thereafter. After taking 36mg, I started feeling kind of nervous. I'm am a little socially awkward, but not this bad. After a couple of days I started noticing my hands and arms shaking. I think tremors or something. I really don't like this. Do all adhd meds do this? So are these side effects and will they go away?

Update: I am taking a class for summer school, with only three other people in it. Even in there I feel anxiety. Also thats were i noticed the "shaking". Oh and another thing... when I was reading a book, finger ready to turn the page. I realized that everytime my heart beat, the page would shake. What's with that?