People who self diagnosed themselves off of social media posts, what was the conclusion after seeing a professional?

I self diagnosed with autism but I actually think that I was diagnosed as a child and my mother never told me

I think this because sometimes I go to the doctor and I say something like “certain sounds feel like they’re hitting me” or “bright lights overwhelm me in classrooms so I put my head down on my desk” and they say “yeah we see that a lot with autism” or “yeah that’s very common in autistic patients” and move on.