Uncertainty around unclear medical results is really stressful. Even when enough data exists for a diagnosis it can still take repeated testing and time for a pattern to appear, or the answer may simply be to watch and wait. That is often a sign the issue is milder than feared. A positive ANA by itself does not prove disease since a fair number of people have the result without significant problems. I assume the rest of the panel was unremarkable.
I need to get this worry out somewhere. Tests ordered by a rheumatologist show something is happening. Most results look fine, but one key test is going to come back positive again, which is why it took longer than usual. Scans are coming next. I have no idea what it means or how concerned to be, and the uncertainty is getting to me.