I am sorry you have having these problems. Hepatitis C Tx is bad enough without having additional problems. However, I think you are heading in the right direction by seeing a Rheumatologist. Hopefully the Rheumatologist will test you for everything and do a thorough exam and work-up. Hopefully you will be able to find out what is causing your symptoms and get on appropriate treatment. If it is an autoimmune disorder, the sooner you get on treatment, the better the prognosis is.
There are several of us with various symptoms, some of them weird.
My ANA was positive in Jan. 2012. My dermatologist order 6 other tests and they were negative at that time, including the Sjogren's antibody. After treatment ended I waited several months for the side effects to disappear. Most did, but I continued to have some problems, mainly rash and joint issues. So I went to a Rheumatologist 10.5 months after finishing Tx and she did a truckload of tests. The Sjogren's antibody was positive this time. It is not uncommon for people with autoimmune disorders to test negative for the specific tests. A good Rheumatologist will go by symptoms as well as blood work.
I was diagnosed with Sjogrens and am now on treatment for it. My symptoms are improving.
I posted in this thread about my symptoms and experience. You will be able tyo see the wide range of symptoms that I had if you read the thread:
And his3707 posted in this thread about her symptoms:
There are others who posted as well. But I think our two threads give a sampling of our symptoms.
Best of luck. Keep us informed about how you are doing.