I have similar feelings about my partner. They’re constantly in and out of the doctor’s office for a variety of medical issues. It would be nice if there were at least some sort of diagnosis. Like we have family and friends say “oh it’s good that the tests for all of those things came back negative” like it somehow means her symptoms will stop since she wasn’t diagnosed. Every time I hear it, the voice in the back of my head goes “how is not knowing the best case scenario?” At least if you have a diagnosis, you can work on treating the root cause.