Fibromyalgia or vitamin D deficiency? Or both??

I was also diagnosed with so-called fibromyalgia 6 years ago. I am two months post-vit D deficiency diagnosis. If you look up the symptoms of osteomalacia (which is the skeleton-softening condition caused by vit D deficiency, sometimes known as 'adult rickets') you will see exactly why you feel so awful. The knock on effects also cause muscle wasting which adds to the fatigue, weakness and poor balance. 

I wish I could tell you that it all gets better after a couple of weeks of supplements, but I'm two months down the line, clinging to my reduced hours job by my fingernails and trying to adjust to the fact that I have a serious illness. GP guidance is that the skeleton will remineralise in 3-6 months, but Dr Michael Holick who is a leading vitamin D researcher suggests that it is likely to be nearer to a year.

One thing I have learned from this is never to accept a diagnosis like fibromyalgia again. It just left me open to being sidelined by doctors when they should have been looking for a cause and a cure for my symptoms instead of suggesting a condition with no known cause or effective treatment. So, weirdly, I was grateful for the vit D deficiency osteomalacia diagnosis because at least it is a real condition with a real etiology and a real treatment. 

My advice is to be good to yourself, research the consequences of vit D deficiency /osteomalacia (Dr Holick has a couple of really interesting lectures on Youtube), rest and forget the idea that you're going to be climbing Ben Nevis in two weeks. It's a serious condition and recovery takes time.  

All best wishes.