I think its very unlikely that what your experiencing is linked to dmt, especially if you havnt taken it yourself.

Do you find yourself frozen to the bed when these things happen? Iv had a few experiences with sleep paralysis, what you describe sounds very similar although i beleive this is much more likely in the morning than at night. Sleep paralysis is common in people ~age 20, and is more likely if you are in an unfamiliar location or have irregular sleep patterns, it is also much more common when sleeping on your back.

What you describe also sounds abit like schizophrenia, voices in your head and the fact that you have made attempts to self medicate the problem, and have jumped to a fairly wild conclusion rather than questioning your mental health and seeking professional help are typical of schitzophrenics. Schitzophrenia also tends to become aparent in early adulthood.

Im sure there are many other possible expanations. I expect it is linked by moving house, your mind does weird things when faced with changes. Is this the first time youv moved? How old are you? Id recommend seeing a doctor or psychiatrist if it persists.