Thought I would update everyone. I am still off work, as I have not managed to resolve my insomnia/fatigue, although I think it is slowly improving.
I have a final meeting with work on Thursday where we see if there are options to facilitate my return to work. if not, then my employment is likely to be terminated on the grounds of medical capability. I do have mixed feelings about it - relief that I can stop having to justify that I am not well enough for work, but sad that my career will end in such a way.
On a different note, I had an appointment with an older lady GP last week, who suggested that menopause is a natural process that people should be able to work through, and that she was going to do a depression test. She absolutely did not believe in menopause fatigue and was pretty much suggesting it was in my mind because I didn't want to go back to work. She has referred me to a chronic fatigue clinic though. I shan't be going back to her - it makes you doubt yourself when a GP questions whether you really are ill.
Anyway, onwards and upwards. Hopefully things will work out for the best, and I will look back, and think that it was all for the best.