How to Deal with Strange Things I would have to agree with Pantagruel that with the symptoms you are having it is probably not a good idea to be using hallucinogens.
I agree with Artimus' thought as well. You may need a medical work up, blood work, brain scans, MRIs etc, to rule out a physical cause of your symptoms.
You don't mention any medications you are taking, so if you are taking meds you may want to research any side effects you may be experiencing for possible connection to your symptoms.
I know this is hard to deal with, but hang in there and know that you will defeat this one day soon.