I felt the same way after getting my initial diagnosis of AS, and I've found that it's just one of a bunch of issues that I have, and not even the most troublesome of them. I'm still putting the pieces of the puzzle together, but I've come a long way towards understanding myself, and I'm glad I made the effort.
That's pretty much how I feel. I do agree with my original diagnosis. I know I have AS. I just don't feel like it's my biggest problem. I'm pretty sure I'm OCD, but God knows what else I've got.
I don't think you'll learn much from internet IQ tests. After I was diagnosed with AS, I was referred to an autism specialist who gave me a battery of tests to measure various aspects of my IQ in detail, and the results were 'highly unusual' according to the specialist.
The results do look unusual. I feel like I'm in a similar position. I reckon if I had a proper test done myself I'd be reasonably high in some areas and very low in others.
I know internet IQ tests aren't totally accurate. I was just in a position where where I was begining to worry that my problem was mental retardation and at least I think I can rule it out. I do know that my performance IQ is probably very low.
If it would put your mind at ease, that might be reason enough to pursue further evaluation, and you'd probably find out some interesting things about yourself. It might turn up something that's treatable, and could lead to an improvement in your quality of life; I got diagnosed with ADHD a few years after my AS diagnosis, and the ADHD meds that I'm on now have made things a bit easier for me.
It takes a fair bit of effort to bounce around between various specialists and undergo testing, and I've needed to make a pain in the ass of myself to be taken seriously by doctors and psychiatrists; they haven't usually come up with ideas for tests, referrals and treatments on their own initiative, and it's been up to me to do my own research, make my own recommendations and generally crack the whip to get things done, but it's been worth the effort.