HIV virus causes the body to produce HIV specific antibodies.
I guess your doctor was talking about ANA, antinuclear antibodies, that work against your own body (autoantibodies).
The ANA test can be positive in many conditions that are of autoimmune character (immune system attacks and destroys the body's normal tissues), as it is a rheumatoid arthritis.
This test can support the diagnosis of rheumatoid arthritis, but, the final diagnosis is made along with your symptoms, physical examination, and other tests.
ANA test can be positive in Systemic lupus erythematosus, Polymyositis, Scleroderma, Sjögren's syndrome, all with autoimmune nature.