Anyone with Adult ADD?

I never really believed in ADD until I started noticing that I have all of the symptoms.
I’ve been searching the web for information on how to talk to your Doctor about it.

How is a person tested for ADD?

What is the medication like? (I’ve heard some people say its a stimulant, but makes you focus. Are there any side-effects I should be aware of?)

As much as I hate it, I should probably get an appointment. I’m just a little annoyed that I might have to give in and take medication to improve my behavior.
But if it really changes my life around, it should be worth it.

Any advice is greatly appreciated.