Yeah, be a bit careful going down the M.E. and route of those other, complex health conditions which could take a very long time to determine (M.E. is still only diagnosed by a process of elimination!) and still remain inconclusive. There are a few of us on here who have gone through years of misery and second mortgage equivalents on treatments for M.E., based on that "diagnosis", only to reach the conclusion that it is a hormonal and not viral response. By all means check everything out, of course, but don't jump to conclusions about anything. Get your hormone levels checked first. If your gp won't do it, ask for another gp or a referral to an NHS specialist clinic. I know there are mixed opinions on the value of bloods, but I'm convinced, certainly postmenopausally, they can provide a benchmark. Mine are through the floor which I wouldn't have known about otherwise! Good luck.