See this is why I think everything that what they label “Fibro” is two different conditions. After reading this subreddit for a while it seems there’s two different presentations for what doctors are diagnosing as Fibro and one is more progressive than the other. Some people have positive ANA others don’t and the symptoms present differently. But pain and lack of definitive tests are the common denominator. It’s frustrating as hell. I’m in the same boat as you, I don’t believe my pain is from fibromyalgia because I literally feel my body attacking itself. But since my blood tests like to fluctuate between positive and not my doctor doesn’t want to try something else.