Could it be ADHD? | ADHD Information

Hi,

I've been having problems with concentrating, listening and blah blah
blah. Basically denying the possibility that I have ADHD so after 5 years, I
finally went to see a psychiatrist and he prescribed me 30 mg of Vyvance.

Its been 3 days and I noticed that I'm thinking more before I talk therefor,
not getting in trouble. I can read more and my concentration is a bit
better but that could be because it wears off by then. How many hours is
it suppose to last? I know I should give it more time but, I noticed my
body feels a bit wired throughout the day. If I stand and listen to my
body, I can feel it. I'm thinking that it may be a placebo affect and I might
need something else, or I might just not have it. Any comments?