I was about to suggest the same thing! Perhaps it is time for you to see a rheumatologist and make sure that it is one who is familiar with Lupus and its treatments. Also make sure that he/she understands that nature of the disease (meaning - symptoms come and go; lab results change from normal to abnormal to normal to abnormal to normal etc.); one who knows that labs must be run periodically over a course of time in order to find out if certain results are present and what are your symptoms when they are present as compared to when they are not present.
Unfortunately, a good rheumatologist who is thorough will do these things and it may take a year or more before a diagnosis is made (this time line is quite normal because of the disease changes so much in each of us). Also, there are many, as Nonna mentioned, who never get an official diagnosis, but whose doctors are intelligent and caring enough that they treat the symptoms anyway to give the patient some relief and some ability to work towards a new normalcy.
Please know that anxiety and depression are also common symptoms of Lupus (and other auto-immune disorders) so a good Rheumy should consider those symptoms when trying to find an answer to your problems and/or trying to determine if your issue is, indeed, lupus.
I wish you the very best!
Peace and Blessings
Look For The Good and Praise It!