Some posit that Fibromyalgia is caused by a malfunctioning HPA axis and the milder symptoms do mimick a conditional known as adrenal insuffeciency, something I've suffered from. What helped me was the following:
High dose magnesium (mag citrate 5 grams a day which equated to 400mg of mag)
500 mg Vit C every couple of hours
Phophotidyl serine to reset the HPA axis and lower cortisol (twice a day 300 - 500mg each dose)
High vit B complex, particulary vitamin b5 (panthenoic acid)
1 -2g of
A balanced diet, high in omega 3 where a small meal is eaten every 3 hours
, and magnesium in the evening to help relax
To bed by 9pm every night wether I could sleep or not - try for a good 8 - 10 hours of sleep, if possible trying to sleep in ie up until 8-9am.
Gentle exercise such as walking twice a day for 30 min or so...anything more was stressful
I stuck to this regime religously over a 4 month period and after 2 months my symptoms began to improve. After 4 months I felt normal but I knew I hadn't fully recovered - it was only at the 8 to 9 month mark I felt completely normal and was able to train intensely.
I hope this helps.