I have a similar situation. Really interesting sitting in a psych class and having The Realization. But don't worry, a lot of people with Autism go a majority of their lives undiagnosed and the only reason it seems like there are more people is because we're getting better at diagnosis. Unfortunately, still not all the way there. For example, like most neurodiversities, girls are harder to diagnose because the medical model is male. Unfortunately, the medical model for Autism is also a child so it's even harder for adults to get diagnosed

I see you too have the wombo quadruple combo. I have an opposite situation. I was diagnosed at like 4 but it was brushed off till I was 14 when I realised it myself after learning about autism in my life skills class for autism awareness week.