Welcome to HCM
We understand your concerns
You are Suffering from joint pain, extreme fatigue
, and how did you doubt that these are associated with lupus? There lies the problem.
I sincerely doubt your ability to diagnose physical problems because you are not trained in that field. Therefore you just has to believe what is confirmed by several doctors in your case. If you are not satisfied with them, find a doctor whom you can believe fully and get yourself checked. But then there should not be any further query.
Anxiety can create physical problems called somatoform disorders. Consult a psychologist
for health counseling. I can help you if you desire so.
Get well soon.