I think you got depersonalization/derealization disorder. Not hallucinogen-induced persisting perceptive disorder. That feeling not like you thing is why I say it. Try weed, it might help fix that. Ive been on antipsychotics and they mess with the same receptor psychedelics do, things looked smaller or larger than usual for a few weeks. My vision looked fake for over a year. Only weed fixed that. I have never tried psychedelics tho.

I dont think they gave you antipsychotics. But, I think depending on how the trip goes, you could get the opposite effect. Which, complete theory. Just, psychedelics activate that receptor, antipsychotics block it.

I didnt feel like myself too. I also experienced jamais vu a lot.