Hi
I am sorry your going thru this. When I read your post I thought lupus but you said.. testing was normal does your rheumatologist believe in fibromyalgia because a rheumatologist can test for that there are trigger points all over your body I went through something similar in my twenties I am now 65 I was diagnosed with fibromyalgia in my twenties by a rheumatologist I see a naturopathic physician who is amazing I also take medication called cyclobenzaprine which works wonders taking away pain I have multiple supplements that my naturopath has put me on which helps immensely did your cardiologist do a mimbi scan by chance which also they do a stress test drug induced . They inject a medication your on a special bike laying on your back, you're hooked up to a machine where they watch everything your heart does and once you're done the scan you go right into the Mimby machine and lay for 20 minutes. My cardiologist finally discovered my heart condition that way
I wish you luck that's very frustrating