Get out off that apartment ASAP! The answer to your question is "Yes!", mold can indeed make you feel like you're "high". I know because I am having a very similar feeling as I am typing this. In fact, that is the very reason I am on the internet right now was to see if anyone else has had this experience. I don't have all your symptoms, but I do feel sort of "drunk"/light-headed/mildly dizzy.
Long story short, I moved out of my condo about a year ago due to symptoms of mold exposure. At first I smelled something musty, then I began feeling weird in a way I can't adequately describe. It was like I was sort of "detached" from things. At first I thought I wasn't getting enough sleep or maybe it was a medicine I was taking. Finally I discovered mold in my AC system. I had my home tested for mold and it was positive. I finally moved out and started living at my aunt's house.
Since then I've spent thousands of dollars on replacing my AC air handler and ductwork.
A week ago I finally thought it was okay to move back in so I went there and started moving furniture back into place and vacuuming and cleaning up. I kicked up a lot of dust in the process. After being there all day I began to experience that "dizzy" feeling again. When I say"dizzy" I don't mean off balance, room spinning type dizziness. I mean it's like having a "buzz" after you've had an alcoholic drink, but not a good buzz. At first I thought it was my imagination because I couldn't believe it could be happening again. I returned to my aunt's house that night. The next day I was still "dizzy" and I had a headache. The following day the headache was gone but it's been a week now and the "dizziness" is still there.
I am extremely worried it isn't going to go away, that I could have permanent neurological damage from breathing in mold spores/mycotoxins. Every morning I wake up hoping it will be gone but it's not.
Please do yourself a favor and get out of that apartment even if you have to break the lease agreement. I'm sure breaking the lease agreement would be cheaper and certainly less tragic than having health problems.
Has anyone else had this experience? If so, did your symptoms go away after a while? I am really anxious about it. I went to see my doctor yesterday and he dismissed the idea and said my dizziness is probably due to something with my ear which I know it isn't. I don't where to turn for help. Supposedly there are doctors experienced in treating mold related symptoms, but none of them are in Houston.
PS. I just noticed you use the word "derealized". Do you mean derealization because that's the perfect word to describe what I meant when I said I felt "detached" from things. It's hard to describe.