Did your regular doctor set up an appointment for a rheumatologist or is the specialist at ucla a rheumatologist? If your regular doctor thinks it is urgent he/she may be able to get you an earlier appointment; you may also want to call the doctor's office at ucla and request to be notified of any cancellations that they can "pencil you in" for.
Sorry to hear about the hives. I myself had shingles twice before being diagnosed, and then I got them (it?) again a month after being discharged from the hospital.
It's a long journey, but once all the t's are crossed and the i's are dotted it gets a **little** easier.
Clarebear