Sjorgens: " Sjögren's syndrome may cause skin, nose, and vaginal dryness, and may affect other organs of the body," -the wiki. " It is likely that interleukin 1 is the marker for fatigue, however, increased IL-1RA is observed in the CSF and is associated with increased fatigue through cytokine induced sickness behavior. On the other hand, Sjögren's syndrome is characterized by decreased levels of IL-1ra in saliva, which could be responsible for mouth inflammation and dryness. Patients with secondary Sjögren's syndrome also often exhibit signs and symptoms of their primary rheumatic disorders, such as SLE, Rheumatoid Arthritis or Systemic Sclerosis." -Also the wiki.
That's Sjorgens, and it really sounds like it. But, I do know that there are two types of Lupus: Systemic and Dermal. It could be dermal. But definitely just get this checked out (I know you will, you seem very afraid.) You'll figure this out, and if you're afraid, the forums are a good place to vent. People know what you're going through, or will at least sympathize.
I hope this gets figured out soon. It will though.
A pessimist is what an optimist calls a realist :)