I don't (think I, there's some argument) have ADHD, but I have watched my wife and a very close friend go through similar ups and downs about. It definitely sounds like a possibility for you and, well, the information will at least let you understand it all better, and that might help (and then there's stuff like ADHD coaches, and of course ADHD support networks). But all of it is hard and potentially requires a bit of a rearranging of your identity, so there's a lot to take in. So take lots of time to have feelings about it. ♥ You need the space.