I've had FM for years, and I can really tell when the weather is gonna change! Also stress, and hot or cold bother me. When I get cold, I get stiff and achey, and a hot tub feels great! Or a hot shower. Fibro fog is horrible and unpredictable. I have sleep issues too. I do take a pain med, as well as a muscle relaxer. That helps me through the day. I do not take Celebrex, or Cymbalta as they do not work. I take magnesium, and Chondroitin/Glucosamine. They seem to help.
I have recently had some saliva tests done (for hormones, etc.) and got put on hormones and thyroid meds. Has made a big difference!! My flare-ups are less, and I sleep better too. Hope this helps! :)