When you say you "feel like junk," what specifically do you mean?
Even if you are diagnosed with something besides thyroid disorder that is autoimmune in nature, the treatment will be medication. So you have to decide if you are feeling badly enough to want to get some relief from it. I totally understand the desire to know if your symptoms have a name, or for that matter, what to expect next. Many diseases like lupus or sjogren's are quite frankly a waiting game. It may take years to get a difinitive diagnosis.
I do hope you are able to get to the bottom of things. Knowledge is power. Best wishes!