Well, last I heard there was nothing conclusive to say that one surely has a DMT experience at the time of death, so your "last one" may be before that

With respect to your experience, how do you feel, deep down, about yourself typically? DO you feel that maybe your mind or aspects of your life are cluttered and/or dirty? Do you feel off balance and uncentered? The space may be allowing you to project that from your mind in a manner that allows you to interact and perceive it externally to you.
I've had my fair share of "dark" experiences, where there can be an odd and uncomfortable vibe that can be terrifying and may lead one to make assertions about "evil" natures and states of things in the experience. I find that the more I am able to make observations about myself rather than making claims about the space, the easier it is to manage, and in turn enjoy and learn from.
As for the strange nature of your come-up and come-down from the experience, DMT is just weird like that. I generally never know what I'm going to get, regardless of the dose used.
And welcome to the forums. Thank you for sharing

One love
What if the "truth" is: the "truth" is indescernible/unknowable? Then the closest we get is through being true to and with ourselves.
Know thyself, nothing in excess, certainty brings insanity- Delphic Maxims
DMT always has something new to show you

Question everything... including questioning everything... There's so much I could be wrong about and have no idea...
All posts and supposed experiences are from an imaginary interdimensional being. This being has the proclivity and compulsion for delving in depths it shouldn't. Posts should be taken with a grain of salt. 👽