Thanks for the reply.
One of the symptoms that I have noticed is that it is like I have 10 conversations in my head and I have to focus on all of them but it is impossible. Then i get really worked up and frustrated because I can't concentrate, and the only way to calm my brain, is if i try to block everything out.This usually takes about ten minutes before i can focus again.
I will have a look at the website that you mentioned.
You might want to get your thyroid checked out. While ADHD really doesn't start in adult hood - thyroid problems can. So ya, I would go and get a medical checkup including blood tests.
But I should add that ADD can easily go undetected during childhood if one has pretty good intelligence. You really haven't given enough of your symptoms for me to comment much. A pretty good web site to check out for adulthood ADD is totallyadd.com
Hope this helps.