Could also be a medication side effect

I am not on any medicine and have really bad nightmares.

I think our minds are uncomfortable due to our bodies being uncomfortable which in turn presents as nightmares. I have terrible nightmares.

I have nightmares since having fibromyalgia and now and can remember most of my dreams too

Thanks for the feedback. So many things are changing so fast and at times I not if something is really wrong or is this a fibro symptom. I'm just not sure what to expect next.