Thanks for responding!

No, not at all.
I find that when consistently ignoring it, it partly goes away (or I don't realize it that much anymore).
It is like some barrier is gone, actually. Normally we have associations with regular memories. I have it - often unexpectately - with dream flashes. If it at least would make any sense, but I cannot in any way discover the links.

I also feel kind of dizzy in the morning right after I realize I am waking up. The dizziness goes away, but a "heavy head" feeling stays, even though I am fully awake and "here". This makes me feel kind of restless, as I have no idea what it comes from.

Any ideas?