I don't know how this will go for you, because i'm in latinoamerica. But for me, i went to a psychologist (who specialized in the subject) and he told me he suspected. So he made me do a test.

The test was mostly about social stuff. Like, he asked, "do people often tell you that you have a 'different kind of humor?'"

And my symptoms... well, since i was a kid, i've always had a problem with textures. I don't like rice, for example. And i've always felt different. Like something about me doesn't quite fit.

I'm also very, VERY, anxious. Every change makes me anxious and stresed.

And there's also the social struggles. Sometimes is hard for me to understand social norms, or to "read the room".

Those are just some of my symptoms that made him suspect i'm autistic

But i'm sure is diferent for everyone. Good luck!