Is it okay to self diagnose?

I have recently been diagnosed with ADHD and GAD.

I have been researching neurodiversity for the past three years and i really do think i’m autistic.

I know this doesn’t define whether i am or not, but i’ve done the aspie quiz, and i got 176. I’ve also had a proper screening test done (SRS-2) by my psychologist and she said it showed signs of autism too.

can i consider myself autistic? or should i wait to receive a proper diagnosis?