Pretty sure I have ADHD

Title says it, but I'm pretty sure I have ADHD. I haven't been properly diagnosed, but judging from the symptoms and other people's experiences with it, I'm fairly certain I have it. I think it's just ADHD and not that with something like Aspergers or Autism though, since I don't really share any other conditions with the latter two. Though something else I might have is SzPD, heard about it when I was 16 and EVERYTHING from what I've read just about matches up with my personality. Though like with ADHD, I'm not saying 100% I have it without getting diagnosed first, though I think it's a safe guess that I might have it.