Thanks for sharing your concerns. I really can't comment knowledgeably with regard to most of this. But, as far as seeking a diagnosis goes, my thought would be that if you do want to pursue professional diagnosis the best alternative, if it is an option for you, would be to seek the services of a psychologist, or mental health therapist, not connected with the university. (I see you're in Canada. I'm not that familiar with how mental health services are provided there.)
I obviously don't know anything about the student counseling services your university provides. Maybe they're excellent. But any contact I ever had with university counseling services, many years ago when I was in school, was seriously lacking.
So I guess I'm a bit doubtful that one would be likely to get much in the way of beneficial assistance from a university counseling service. But, of course, I could be wrong.
You could go back to your GP with regard to this I suppose. However my experience suggests to me that general practitioners don't, as a rule, have expertise in mental health issues. And at least some of them can be quite arbitrary & narrow minded on the subject.
You could consider seeking an opinion from a psychiatrist I suppose. But, here again, I'm not knowledgeable with regard to how these sorts of things work where you live. Where I live, pretty-much all psychiatrists do is to prescribe & monitor psych med's. So I don't know of how much help a psychiatric consult would be either.
I did want to just mention that, as it happens, family therapist Kati Morton has just uploaded a video onto her YouTube channel on the subject of high functioning autism. I haven't listened to it myself yet. But here's a link in case it would be of interest to you:
Also... here's a link to a previous YouTube video Kati uploaded on the subject of Asperger's & autism:
From what you wrote, it sounds as though you're probably already pretty-well informed on the subject of Asperger's & ASD. So I won't burden you with a bunch of links to articles on the subject. However here are links to 3 articles, from PsychCentral's archives... the first being a quick screening test:
https://psychcentral.com/quizzes/autism-test/
https://psychcentral.com/lib/adult-a...f-a-diagnosis/
https://psychcentral.com/news/2016/1...sm/112749.html
Lastly... here's a link to an article on another website I happened onto related to the question of whether or not to seek a professional diagnosis:
https://musingsofanaspie.com/2013/02...nal-diagnosis/
I wish you well...
