Depersonalization, schizo, or spiritual?
A few thoughts to share while I am waiting for you to get back to me on the questions above. A lot of empaths struggle with things that go on that they think can best be explained by mental illness. And while I think you should rule out mental illness with a doctor's visit, here are some other possible explanations for what you are experiencing:
*Marijuana these days on average has crazy high levels of THC. It is estimated to have 70% more potency than what marijuna had in the 70s. And that THC as you may know, is what has psychoactive effects.
*The pineal gland is known to be connected to our 3rd eye. The pineal gland is already very active in people who are empathic/psychic. When you smoke weed as an empath, you are super charging the impact on your third eye. When humans consume psychiatric drugs, it affects this complex cascade of activity in the pineal gland, in conjunction with various other parts of the brain, to give a subjectively altered state of perception.
Based on the science, and my personal view, it can be a bit dangerous for anyone with psychic abilities to smoke weed since the effects are much stronger than they would be on a non-empath person. It can be very intense and scary. You're going to hallucinate more, and have a much tougher time dealing with the after effects on your brain. And I have heard from many empaths who have suffered from hallucinations and general "out of it slugishness" even 3 days after smoking weed. That's the unpleasant after effect for an empath.
When you are sober as an empath, you can also go through periods where things get very weird with paranormal and inexplicable surreal events that are happening. And I don't know why this is, but as an empath when you are overstimulated and ungrounded, you can and will experience hightened sensitivity and strange paranormal things. I think when we are under that kind of stress, our chakras are just too open, and what we experience is too strong. In some cases the things you experience in that state may cause you to be confused and think you are losing your mind. And I have personally experienced being ungrounded and low vibration having unseen things visit me and try to attach to my aura. Just as @janett-niemi said, you can be overwhelmed with energy that you are absorbing from the living and non-living worlds. And lastly, @crystalsage gave you some really good advice on how to ground yourself and raise your vibration. A good 20-30 minute soak in a salt bath can do wonders for making you feel better (it helps pull out unwanted energy so your vibration can return to its normal high level). I would suggest doing a bath with some nice relaxing music and see if that makes you feel better. Most of us do 1-2 salt baths a week for general maintenance to rid us of unwanted energy and keep us grounded and balanced. But when you're having a tough time, there is a lot of benefit to doing a daily salt bath. I like to do them before bedtime so that I wash away the unwanted energy from the day and sleep better. And meditating is also an excellent way to unwind and ground yourself. (Although I find that since a lot of people struggle to relax and meditate that the salt baths are just easier).
And on a final note on the depersonalization, I had to help my teenage empath son through that. He got hit with almost daily periods of depersonalization for a few months. We think it may have come at a time when his skills were in transition. But he was also pretty stressed and ungrounded so I think there is a connection there. For him, doing salt baths and getting improved sleep did the trick for getting balanced. And once balanced, the depersonalization went away. My two cents for you is that depersonalization is something that happens to some empaths at times. It's a red flag for you to just slow things down and do some self-care to get grounded. Try some of these suggestions and we'd love to hear if it is improving your situation.