Hi Lucy6, You need to google fibromyalgia symptoms on your computer or iPhone. There is a lot to learn about fibro and you will set your mind at rest once you are familiar with the multitude of symptoms associated with this problem. Most of the fibro symptoms come and go over time, some more quickly than others, but none of them are terminal which is a good thing.
Here is a reliable link: https://www.mountsinai.org/health-library/disea....
There is a multitude of information on the web and most is up to date and very informative, some even written by fibro sufferers like us.

Fibromyalgia Information | Mount Sinai - New York

https://www.mountsinai.org/health-library/diseases-conditions/fibromyalgia

Definitely connected. Our brain and the nervous system go all over the body. There is also more than just the central nervous system, I forget the other nervous system. My point is I have Ulcerative Colitis and we all have nerves throughout our gut, so my issues are all compounded. I get all kinds of syptoms. Too many to list out here and I am only in my early 40s. It has all gotten worse as I age, and when I hit my 40s the symptoms have been progressing much faster. I don’t look forward to 50+. Though I wish I could retire, but I have about 25 years left unless I can get disability, but given the economies I won’t try to anytime soon unless I can’t work.

That's a fantastic website thankyou so much . Just shows how connected anxiety and fibro are related xx