I'm waiting to see a doctor, and kind of wondered if I have ADHD, as a child psychologist when I was little seemed to think I had it. Anyway, I took someone else's concerta when I was in college, and it made feel like really good. I no longer felt depressed and could concentrate, felt motivated and everything. The bad point was that I didn't sleep for maybe 2 days. I'm thinking that I don't have ADHD because it sounds like not being able to sleep for 2 days is not what the medicine is supposed to do. Or am I wrong? What do you guys feel like on these meds?

I should add that I took the adult adhd test: http://psychcentral.com/addquiz.htm

It said highly likely. I read some of the symptoms on other sites and didn't identify with them all the way, although I remember when I was a kid I was pretty hyper and did some innappropiate things without thinking of the consequences. When I was a teenager, I kind of grew reserved and reluctant to open myself up to others because I think I feared my embarrasing behavior would come out.