I'm so sorry. You and I (and apparently Kelly!) sound alike. In school, I got straight A's and almost maintained that in college as well, through a very challenging major. But what I have learned through dealing with what is most definitely ADHD with DD is that ADHD looks vastly different for girls/women than it does for most boys/men. Add in a girl/woman who is very smart and I think it most often gets overlooked or diagnosed as something else...primarily anxiety, because of course you get anxious when you are very smart and you know what you need to do, but you just can't focus worth a hoot to get it done.
I know this will be difficult to find, but if you can find a female ADHD psychiatrist (or one who specializes in ADHD in women) I bet you'll get a more accurate diagnosis.
Keep pushing for answers...you've got to be your own advocate here.
I was going to post something similar. I don't have any advice, but I've been following your posts as I think I may have ADHD as well, and count me as another one who did really well in school. I would look push back, or look for a 2nd opinion, ideally with a female dr, or someone who specializes in ADHD in women/girls. (And I know that's a tall order given how hard it is to get in to see a psychiatrist.) I hope you're able to get some support/help soon!
~ Dawn
Our little monkey (4/2011) & his early holiday present 12/12