Just to frustrate things, the last 2 nights I've woken up once! Up at about 4am and then at 0730, which is pretty much normal get up time! Why does my body do this? As far as I can tell, I'm doing the same old routine so nothing changed.
Having spoken to a private GP via my DHs healthcare line, she went back to the "don't drink after 6pm" line. Almost impossible when you eat at 8pm or go for a fast walk or regular exercise and need water!
Oh, well. I can try I suppose and just have a glass of water to hand at night time when I wake up dehydrated and with a headache, which happens if I don't drink.
I have also just invested in an "in-house sleep test" monitor from a local company that can diagnose sleep apnoea, as well as collecting stats re BP, o2, respiration, etc. If it rules out apnoea then that's a start.
I'll let you know how it goes and recommend it, if it comes up with anything useful!