Sounds familiar

I'd definitely keep your eyes peeled...
I've taken a lot of psychedelics and drugs of all kinds in dreams, some that were completely foreign/impossible and happened on what looked like other planets. The effects can be unlike any other psychedelic to sometimes, or a very complex mix at least. I suspect all those endogenous tryptamines and beta carbolines play a role, but who knows. A lot of times things just get intensely psychedelic without taking anything in the dream to. And your right about waking up feeling like you just had actually gone through the experience. It can be like that for me, even just after a lucid dream. Sometimes I'll wake up and still be tripping hard for a minute or so.
I remember the first time I took mushrooms...halfway through the trip, at an intense turning point where things could go either really good or really bad (was out in nature with friends at the time), I realized that I'd dreamed this exact scenario 2 weeks earlier, and the dream had ended right at the point I was at in reality at the time. A friend remembered the dream to, since I'd told them about it beforehand. Robert Anton Wilson recalled dreaming a trip he later had as well, except with LSD...He didn't remember it until he saw it in his journal after the fact. Stuff like this is reported literally all over the psychedelic literature/community, and many have said that "divination" is one of if not the most common function for psychedelic use in cultures where it has been accepted for thousands of years.
My first experience with hyperspace (that I remember, at least) was actually in a dream several years before I'd heard of DMT (it was the night after my intro to cannabis, which was an extremely intense trip that got even more intense after falling asleep).
The most relevant thing to your experience though would be the first time I smoked DMT in a dream, which occurred before actually trying it in real life, and it worked. And like the mushroom trip dream, it too seemed like a reflection of a very particular/specific future experience which occurred a few months later, but there is more to that than I can get into here. I also dreamed of extracting DMT before I knew about the process. I was standing in this room with a jug filled with black goop and some clear liquid at the top that looked exactly like my later STB mix. Looking at it, I had the strange impression that I was to ingest it, and that it was a drug of some sort. This perplexed me as my first thought was that it looked like battery acid, and right then the jug melted away
I really can't recommend a dream journal enough. It's amazing the precognitions/synchronicities/general cosmic giggling weirdness that we forget over time as we trudge along in our billiard ball conceptual-tunnel of a universe. Even if we don't agree with that model, we've largely been conditioned that way and it still effects our perception. I think if people could remember everything that's ever happened to them, then they would just be in complete and utter awe at how often these sorts of things occur. Without a doubt, it would completely change our perception of what reality and self is. I've recorded dozens if not hundreds of things like this that would have been, for the most part, otherwise forgotten.
<Ringworm>hehehe, it's all fun and games till someone loses an "I"