I've had psychotic symptoms since I was 11. My whole childhood seemed like one long depression until I was a teen and had many major manic episodes. So when I was dx at 17 I wasn't suprized, but I was in serious denial. I got dx again at 27 again major depressive episodes, mania, and more psychosis. Really wasn't anything I could deny any longer, it was pretty clear. I think it's natural to wonder and question it tho. I still do have doubts from time to time. Although I always knew something was wrong.