I have finally seen a psychiatrist! It's still unofficially since I'm not registered in any medical record, so no meds for now, but at least I've seen a psychiatrist, a truly advised person.
It turned out that the diagnosis my acquaitance suspected I might have was pretty accurate indeed, only that I was not truly obsessive compulsive, nor schizotypal, but Aspie, which, according to the psychiatrist, might be mistaken for schizotypal/schizoid personality disorder...So my final diagnosis is GAD, Cyclothymia and Asperger...
It really is a relief to find out I wasn't suffering from some kind of mental retardation keeping me from knowing how to behave in society and blah blah blah, like I thought and felt my whole life as far as I remember.

On the meds, now...I'm afraid of them a little. I'm afraid of their side effects, mostly; I don't want to gain a lot of weight, or sleep 16 hours/day, or get priapism and so on...I'd rather endure pain than get any of the above...What to do? Is there any kind of 'side effects free' meds, or at least meds with very mild ones, such as sleepiness or fatigue?