Yes, I've been seeing an acquaintance who has studied Psychology and he told me that my chances of having all those things mentioned by me in the past are pretty high; he also advised me to see a psychiatrist just to make sure. Even with him I talked via Internet. It'd be very difficult to just step into my psychologist's and tell every single thing I wrote/asked here on PC - the reasons are uncountable. But yes, you are totally right I should tell eventually.
Some of my 'past diagnosis' stopped bothering me [that much] (schizotypical disorder; voices; I can now sleep; I don't think that cysts presumption was accurate yet I should indeed check it out). I believe that if I would tell my psychologist about them, after they disappeared he'd think I don't have my mind busy enough or that it's just an age related problem or other stuff like that that would make me feel like an idiot. That's why I first ask here, to see if it really seems serious or not.
Thanks for the suggestion, I'll try to get past my low self-esteem and paranoia problems keeping me from seeking help.