Okay, so, I'm going to do a copy-paste of a post I made in a different topic that had to do with dreams as well, as I figured it explained my experience pretty well:
I dont have nightmares, per say, but I do have a trend in dreams, a recent trend that I find a bit disconcerting. It's not a matter of anything being scary or whatever, it's more along the lines of them sorta "evolving". I'll try to explain.
Originally, I didnt dream all that often. That was the case through most of childhood and into adulthood. It was rare enough to be special when it happened.
At some point a couple of years ago, that abruptly changed. Now, it happens every single time I sleep, without exception.
From there, the dreams started to intensify, in terms of how vivid they were.
And then the REALLY odd one: the first time I could actually *feel* something while in a dream. Could feel it in my hand as much as if I'd picked the horrid thing up IRL. This effect does not happen every single time, it is sporadic. The first time that happened is also one of the dreams I have a complete memory of.
Next, others. Previously I'd never had any other people appear in dreams, and then suddenly that started happening. That is now frequent. They are not anyone I know. They are... fuzzy, distorted.
Finally, talking to those others. That started recently and is also frequent. Prior to that, they never spoke, and neither did I. But now they do.
Also, the dreams started to become more "stable". Less of that sort of... popping around, less abrupt warping.
Now, that all being said, I do occasionally have dreams that to some, might be considered nightmares, due to something dangerous being present, though I usually dont find myself scared during them... moreso, cautious.
If you'd like to hear about one, I wrote it down in this topic here:
A dream story
One of those rare ones that didnt crumble upon waking. I still remember it like it was yesterday. I could also describe the first "feel something" dream, if you'd like. It makes even less sense than the one I just linked to.
And yes, all of my dreams are that strange. Even back as a kid, they were surreal, bizarre, twisted. Warped and endless structures, bent into impossible angles, clearly non-euclidean in nature. Other things that I cant actually find the words to describe.
There is one very specific thing that has often shown up, the only sometimes-repeating element, which is the library, and it basically looks like this:
Took me forever to get it to give me that.
But anyway, it's basically like that, but it never ends. No matter what direction you go in, there's always another corridor, another door that opens into more halls, another stairway, another bridge between sections often placed in nonsensical spots. And all the books are the same green & brown as everything else. Some sections look sorta normal-ish, like that bit, others get very surreal and twisted.
No idea where that one comes from or why it repeats every now and then. But it does.