First off - congrats on your pregnancy. Having gone through 2 with my wife, I know how exciting and difficult it can be. Not to mention what it must be like to have ADHD.
Anyway - I am being forward, but does your OB know about your medication? And that you stopped? I would start there. It is never advisable to just stop taking medications on your own. Of course I can understand your concern about medications during pregnancy, but always start with your medical doctors and work from there.
Gotta run - my little one is fussing.
All the best,
Rory