Alas, it might be that you'll have to wait.

In the meantime, if you want to read more about ADHD, then look at the sticky regarding resources at the top of this ADHD forum.
ADHD can be managed (worked around), and you can try some of the techniques, even though you aren't sure yet if you have it. My son has a 3.4 GPA at a prestigious university, is very active socially, etc. One of the main authors of one of the books that's classic for such problems is a medical doctor. (The book is called "Driven to Distraction.")
I don't want you to worry so much. Okay?