I think we all posted the "medication" theory around the same time, annesixty.
Eglantine I´m glad you got some sleep eventually.
I don't suffer from nightmares, but I do often wake up at 2 or 3am. I read up on it and it seems than in pre-industrial times this was the norm, that people went to bed when it got dark, slept for some hours, then woke up and used their precious candle light to do something useful, or read their bible, before going back to sleep for their "second sleep". I put a dim night light on so as not to disturb himself, turn up the font on my Kindle to large and read for an hour or until I start nodding again. In Summer when it is not too cold, I get out of bed and snooze in my reclining chair with Radio 4 on low. I have tried listening in bed with an earphone but that doesn´t work, it is too distracting when I move my head.