Did anyone else’s nparents not believe in autism and ADHD so you never got a diagnosis?

My mom has severe autism and my dad has severe ADHD and NPD. I inherited both of their traits yet they have lived their whole life without a diagnosis, and I had to go find out the hard way after a long time of wondering what the heck was wrong with me. When I was growing up, I was always told to be normal and was yelled at for stimming and not wanting to be around people and being different. My parents aren’t from the US, and they believe that pretty much all mental illness is made up except for things like PTSD and intellectual disabilities. I could never have PTSD according to them because they could never cause something that tragic to happen to their kid.

Is anyone else in the same boat? I am also in a way better place ever since I moved out over five years ago, so I just wanted everyone to know that. :)