I was reading your post and I am sorry to hear about your condition. It is very difficult to come to terms with any of this Lupus stuff. I was recently dx'd myself with SLE. Although, I don't have any of the organ involvement or symptoms, it is very scary to me.
When will you be recieving your lab results? I will put in a prayer for you, I can imagine that the wait is killing you. KEEP BUSY as much as you can handle. I don't know what sunbed is exactly, but I too always suffered from throat infections, back aches, etx. It could just be something simple like that.
Good luck and I hope to hear from you soon!