This winter has been utter hell for me due to the extreme cold (when getting to -20 was a heat wave), grey, huge amounts of snow...I sympathize.
A few things helped me tremendously over the years.
Getting the right sleep meds. I take a combination of two, one isn't available in the US. Getting lots of good quality sleep is essential. Studies have shown normal, healthy people who are deprived of REM and stage 4 sleep will get fibro symptoms. Some believe fibro is really a sleep disorder, though I think there's much more to it.
Going on a gluten, dairy and yeast free diet. I 'cheat' once in a while, but I can feel the pain and fatigue when I have gluten. If you need bread, a new one out called Udi's is fabulous - never tasted a GF bread so good. I am carbohydrate sensitive, so I limit my bread, etc. I also use shiritaki noodles rather than rice noodles. They're found in Chinese markets in the refrigerated section.
Certain supplements - yes, the vitamin D mentioned above (I get Carlson D3 2000 iu and pop 2 a day), COQ10, good quality fish oil, L-aceyl cysteine, B12 injections (I do these at home, my doctor showed me how - 1000 mcg/hydroxocobalamin daily) and acupuncture (I'm in Canada, so it was available to me through my physiotherapist, and because I'm on disability as well, it was free. That, getting the right sleep meds, the B12 and the GF diet helped the most. Not everyone benefits, but the people, including me, that respond well to it respond WELL). D-Ribose helps some, I found I got heart palpitations from it and stopped.
Magnesium is a must, people with fibro tend to be deficient. A cal/mag supplement isn't enough, get them separately and work up, slowly, till you're taking more mag than cal. Right now I'm 1:1 but I had to be at around 1.5mag to 1cal.
I will crash if I exercise hard, but some type of stretching and very light weight training (I just have my own weights at home) also help. But I listen to my body, if it starts to hurt a lot, I give it some time, and then go back to it again. Tai chi and qi gong (breathing, yoga can also be beneficial) also helps me.
Summer/sunshine/heat are a must, but that's hardly affordable for me 6 months of the year. I definitely feel better when it's hot and sunny out.
I like this site for resources, up to date on a lot of ongoing research:
http://www.prohealth.com/fibromyalgia/index.cfmYou're definitely not alone. Gentle :hug: