Hello @georgiakate Welcome To Mayo Clinic Connect. We are a group of individuals who help each other through health journeys by sharing information and tips and on what has worked for us and what has not. We are not medical professionals so we cannot diagnose or prescribe medication, we can simply prescribe information, resources and tips.
You have seen a rheumatologist who detected a high ANA score but he he does not think that there you have an auto immune disease. You do have lots of vague problems or symptoms but he doesn’t think these are important. Is that correct? Then your GP finds that your ANA score almost doubled.
Can you return to the rheumatologist, tell him that your ANA has doubled, and ask about special lab work for autoimmune diseases?

https://hoagmedicalgroup.com/articles/what-does-a-positive-antinuclear-antibody-mean/. I added this link about some rheumatologists talking about autoimmune diseases.

Will you come back and let me know what you have learned? Becky