Hello and Welcome to our WHL family.
I am sorry that you are having so many issues which are not yet diagnosed. As has been mentioned, we have quite a few members here who do not have a diagnosis, or are diagnosed with MCTD or are still in the diagnostic process.
Please read the stickys on the top of each forum as they are a wealth of information and browse around our site; read some blogs, member profiles, etc. Feel free to join any conversation that you wish or start one of your own. Again...welcome.
Peace and Blessings
Look For The Good and Praise It!