Yes, many of us had those symptoms (and more) before we were diagnosed. I was almost completely bald by the time my Lupus was diagnosed. You symptoms could be Lupus with some overlapping illnesses. Lupus seems to always be accompanied by several overlapping illnesses :x
The dry eyes might be a symptoms of Sjorgen's Syndrome
Low Body Temp could be a symptom of Lupus
Loosing Hair could be a symptom of Lupus
Swollen legs could be a symptom of inflammation
You doctor will need to run lab tests and use those with your medical history as well as presenting symptoms, in order to determine exactly what is causing your symptoms. But, it does sound as if there is some auto-immune and/or connective tissue issues going on.
I wish you the best of luck and keep us advised as to what your doctor discovers.
Peace and Blessings
Look For The Good and Praise It!