Need help... Was I falsely diagnosed?

About a month ago, I was hospitalized and diagnosed with Schizoaffective disorder after almost making one of the biggest mistakes in my life, however, I think it's a misdiagnosis for multiple reasons:

I would have periodic ups and downs where I would be intensely interested in something for a long period of time followed by feelings of meaninglessness, but it never got to the point where I couldn't control my mood/emotions. I attribute my excessive enthusiasm to my Asperger's and less productive semesters simply as bouts of depression, likewise I attribute these to my reduced affect, lack of eye contact, and whatever negative symptoms there may be.

As finals week rolled around, I was so agitated that I did nothing but walk around for miles instead of studying and freaked out, sitting in front of a highway in the middle of the night as a result. This resulted in my hospitalization, as did my 'paranoid psychosis.'

This 'paranoid psychosis' was simply me complaining about a stalker that almost certainly existed who bothered me for the past year and a half. I probably shouldn't have said anything given that a lot of paranoid schizophrenics probably complain about stalking, which was my initial diagnosis. Otherwise I haven't 'hallucinated' other than from neurotypical sources like hypnagogic hallucinations.

Back at the hospital, they determined that my freakout was a manic episode or mixed episode... but I felt absolutely awful and frightened before I did what I did, not exactly euphoric or irritable.

Tl;dr
I don't have real hallucinations and doubt I suffered from mania. Was I misdiagnosed with Schizoaffective disorder when I just had a really bad anxiety attack or no?