What Are The Early Signs Of Fibromyalgia?

What are the early signs of Fibro myalgia? I have had sore necks and back since I was a teenager including mild joint pain since I was in my late 20s(I am now 48). My sister has suffered from fibro for years and I never considered it could be the cause of my pain. I have tried physio and had a really good chiropractor for years, but it never seems to fully recover and I go through bad bouts of neck or lower back pain. I also have an extremely bad memory and do get brain fog. The worst thing of all is I get cronic restless leg syndrome and need to exercise my legs on average about 3 times a night when it is mild, up to 7 times if going through a bad patch...( wondering if just lack of sleep is adding to brain fog?) I have always been a healthy eater and exercised (walking as running hurts my back). I also suffer from its seems like a tender or hyposenstive stomach. I went on a gluten free diet 4 years ago and this has helped, but lately (and it seems when my back is really sore), I get nausea at night and in the mornings...can a sore back lead to nausea as these seem to go hand in hand lately. Thank you for your time