Hi Shrub, and welcome.
I personally do not feel head cold sorts of symptoms, but perhaps others here will tell you if they do. It is not a symptom that is commonly associated with fibromyalgia. Have you discussed this with your doctor? It may be something that is not actually caused by the fibro at all, and could be treatable.
For those of us who are used to being very active, and this is pretty common with people who develop fibromyalgia, it is definitely a challenge to make the adjustment to pacing ourselves. I have noticed that most people take time to make that adjustment, and it is learned through experience: If you push yourself you will pay for it for the next X number of days, and eventually this sinks in and we learn not to push. The faster you learn this the better, but it is fully understandable that it takes a little time.
Most people with fibro report that the pain medications generally prescribed for treatment have little to no effect, unfortunately, so don't feel too discouraged that you are not able to try most of them. What you can do is your own experimentation to discover the most important things about your own personal fibromyalgia. I say this because we tend to be all so different that no one can tell you that any one thing, whether medication, supplement, or action, will work for you even if it worked for them.
Finding the things that trigger a flare and avoiding them, reducing all stress - of all kinds - in your life, pacing yourself, eating the healthiest diet possible (and what constitutes a healthy diet is very individual and can vary from a carnivore diet to vegan), and doing what you can to maintain a positive mind are all things that can help.
I wrote a post about this, and suggest you read it.
We are all here to help each other, so feel free to ask questions or even just to vent if you want or need to.
I am not a doctor or anything, just a person who has lived with fibromyalgia for several years now and has done a lot of research and trial and error experimentation. What follows is just basics. There are a lot of variations. You will find your own versions of everything I say, as this is not a...
www.fibromyalgiaforums.org