Hi Kell,
I've got MCDT mixed connective tissue disease, in other words to many overlapping autoimmune diseases and by what i've read of what your going through, it seems to me that you possibly have Lupus and also sjogren's syndrome also like myself.
Although your ANA came back clear after the first time should'nt count because most likely the steriod helped to correct that because Lupus is known for fluctuating the blood and giving off false readings, it being speckled the first time plus your symptoms shows enough for a possibility of Lupus.
Your ANA keeps being tested because the specialist knows that if it keeps showing negative after it being speckled that the blood should be retested every 6-9mths.
Terry