I have been having more and more hypnopompic hallucinations, which I can recognize as hallucinations

Of people who are gone, and of something. It is a thing that floats on top of my body and opens its extremities and closes them as if it is absorbing something from me.

I see this thing after I wake up from flashbacks or bad dreams.

I don't know if I would consider this thing alive or an object. It looks like both. Like an object which is also a biological thing.

I also know it is not real and it is related to my sleep disorder.