What if I have Lupus?

I have posted a few questions lately. I'm just really scared. I'm a real mess. I feel sick, have chronic pain and just ache all over. Ihave been having trouble going to the bathroom now and I just feel so swollen everywhere. I feel like the goodyear blimp! But yet in a lot of pain! I want this to stop! I'm afraid the Doctor's have really screwed up and made things worse for me. A year ago I started having problems with pain, fatigue and headaches but all they wanted to do was prescribe migraine medicine. Now I'm so much worse and went through several course of treatments with nothing working. I am worried that I may have lupus and/or rheumatoid arthritis. Both run in my family. My cervical spine is falling a part and believed to be a cause for my neck and arm pain. I have all the signs of degenerative disc disease. Here's the rest...my hair falls out every day...barely growing any more..I have a rash (it comes and goes) on my cheeks. It kinda looks like wind burn.Uh oh