I dreamed quite a bit before CPAP and about the same after; ie. six months now. I seem to always dream a ton. Most of them benign with a bad apple thrown in, maybe once a month. Sometimes I wish I didn't dream so much but I guess that's better than not dreaming at all.
I started dreaming on my second night of cpap. It had been years of no dreams for me. At least none that I recalled. I never woke up with that "had a dream" sensation or memory. Of course in my initial sleep study I had 305 events in 3-1/2 hrs so there wasn't much time for dreaming, I guess. I only know that after 63 days of therapy I'm feeling pretty good and dreaming every night. I hope your therapy gets easier and you find the rest you need. Hang in there.
After I got on the hose, I didn't dream for a long time, either. In the past year, though, I've dreamed (or remembered dreaming) more. Prior to CPAP the dreams I had seemed to be repetitive, frequently involving swimming underwater this is what are dreams
and being unable to reach the surface, being trapped below ground, unable to reach the surface, being in a confined space, unable to get out. . . you see a pattern there?
"...a surprise discovery of the recent past: sleep studies have revealed that not only do we dream in REM sleep but during non-REM sleep, as well. And these two dream states may be fundamentally different, affecting us in different ways."