In my usual style, I typed out and edited three separate, different responses in this thread last night. Hit "cancel" on each, as I couldn't communicate what I was trying to say well. I'm still not sure I am.
Oh, one more quick thing: I don't have a professional diagnosis. I don't have the money to pursue one. I feel completely certain that I'm autistic, with a fairly textbook Asperger's presentation.
For me, my autism was fairly well hidden for most of my life. I was smart enough to fit into that "well, he's really smart, so of course he's a bit weird and socially inept" category. My sensory issues were just what the world was, to me. I didn't realize that others were experiencing light and sounds differently for a long time.
I could never figure out how to be, what to say, etc. but I also took that as the effects of IQ. Also, it was the 80s and I had no speech delay, no difficulties with learning, nothing that would alert anyone to anything at that time. I feel pretty sure that if I had been born anytime after about 1990 I would have been diagnosed with AS. All the signs were there, there was just no one who knew how to read them.
It felt very unsafe to be "too different" and I was pretty close to that point already, so my brain completely suppressed anything that would make me seem more different than I already was. It was never masking, realistically, as it was never a conscious choice, just suppression that was completely subconscious for the same reason it existed. Now I'm trying to do less of it, and it's hard trying to figure out who and what I really am, underneath the internal pressure. It's both good and terrible, many times at the same time. I'm glad to finally have things make sense in ways they never never never did, but at the same time I sometimes am not sure who I really am, and at others I feel like I'll explode if I even let up on the pressure. It's a work in progress. Feels like walking on a razor blade sometimes.
**Edited to add: And with all that, I barely touched on the answer to the question.
Wall-o-text, check. Tangential communication, check. Still unsure exactly how I can communicate exactly what I'm trying to, check. I should just forward a copy of my AQ and Aspie Test along with this post to a psychologist, then I'd have a diagnosis letter...