i am. self-diagnosed currently, and will be for a while because while i am on the waiting list for an assessment, it's a 30-month long wait, and i always worry i might unintentionally "fail" the questions when i do get there lmao. i kind of figured it out after seeing a lot of posts online and going, "hm, a lot of this fits me," but i never really went anywhere with the idea until i was in CBT and my therapist asked me if i was autistic. apparently my inability to make eye contact with her and having no sense of self tipped her off. i have a lot of sensory issues, mostly with noise and texture, don't like change of any kind, struggle with alterations in routine, hyperfixate on things, get attached to random objects, do a
lot of masking, have difficulties with empathy and socializing, and i do
a lot of stimming, which i never realized until someone pointed it out. as you said, it's less diagnosed in girls/women, so i'm not surprised nobody really clocked it because i passed as quite neurotypical, though thinking back, there were probably a few clues that something was up, like apparently i was super excited to start nursery when i was four, but the second i got there, i spent the whole day crying and hiding under the table. (and did this for a few days...) and when i was between 7-10, i would "collect" street names by writing them down in a notebook while i was in the car. slightly
odd things like that.
(plus a heavy aversion to change and sensory issues with food.)
i would say it probably affects my daily life a lot more than i care to admit. i can't answer the phone, and i'm pretty sure this is a combo of my anxiety but also my autism, because phone calls can be unpredictable (in nature and when you receive them) and i can't see the other person, so there's no body language or facial expressions to help with social cues and interpreting tone etc.
(this blog post does a good job of explaining a lot of the difficulties i myself have.) obviously this means trying to apply for jobs has been hard because if nothing else, they'll call you to arrange an interview, and i can't make doctor's appointments and things for myself for the same reason. i also had what i now realize was an autistic shutdown (caused by the massive change and extreme stress/overload) when my parents left me at university, and ended up dropping out within three days, which i try not to regret, but. i think, maybe, if i'd known i was autistic then, and there had been support for that, it might've gone better.