Hi Eve,
If it was worrisome, your doctor would have told you so relax.
Also, even if it is a thyroid problem, at least you will know what it is and take action. For me, uncertainty and confusion about my problems has always been the worst. Once I am clear what the cause is, I greatly relax!
As to tests, so far my thyroid tests have all come normal but I was tested frequently in the mids of the havoc that peri created in me two years ago, to determine whether it is peri, or thyroid symptoms. I finally started HRT and symptoms subsided so I haven't done any further tests. It was clearly perimenopause that was causing me all kinds of things, fatigue and exhaustion to name a few.
Good luck in your visit to the doctor and keep us updated!