Are these side-affects of Dexedrine?

Okay so I have tried Phocalin, Daytrana, Straterra, and now Dexedrine. I have had the worst side affects on all of these and they either make me completely zoned out, or I am just super irritable. I am not overdoing the dose on the Dexedrine I am on a kiddie dose of 20mg. My psychiatrist is trying to determine if I have ADHD(diagnosed in 2nd grade), extreme anxiety, and depression or if it is Bi-polar.. She is putting me on this because she wants to see how I respond to ADHD treatment since it is easier to treat then Bipolar and if it doesn't work out she will look into the Bipolar. Since I have started taking it I am extremely nauseous(taken with food!), dizzy to the point of almost falling over, horrible headaches, my anxiety is through the roof insane, not hungry all day, and I am both sad(I feel like crying for no reason), some-what zoned out, but still have my hyperactivity too. It doesn't make any sense!