Could I be misdiagnosed with sjogren's syndrome?

Could I be misdiagnosed with sjogren's syndrome?

I am 20 years old. Hair loss, joint pain, easy bruising, weight loss, positive ANA, had been anemic(resolved), had thyroid problems(resolved), swollen lymph nodes, very very tired, and I overall feel bad. Two more nodes have swollen on the side of my neck; they don't hurt just feel swollen. I have also had pain in the back of my sides a little below my ribs, but I did not discuss it with the new doctor. My primary physician took tests and after a while she diagnosed me with Lupus. She said I needed a Rheumatologist for treatment. I decided to move shortly after and never went to the referral appointment. So, I found a Primary physcian to refer me to a rheumatologist in my new state. The new doctor does not have my medical records or results from previous tests. He ran some tests and consulted the rheumatologist, then told me I have sjogrens syndrome. He said that I do not fit the classical definition of Sjogren's, but i have it. I have no dryness, which I understand to be a hallmark of the disease. I would like someone's opinion who has experience with this disease. I'm not sure what I have, and yet this new doctor has prescribed prednisone and plaquenil for treatment. Should I get a second opinion? Which doctor seems to be on the right track, my previous dr. or the new one? These diseases seem to be very tricky so, not all doctors are experienced with the diagnosis. Please, I am looking for honest opinions and a little bit of help. I will appreciate your helpful advice and comments. I would to like to know exactly what I have and how to best care for it. Your input will hopefully help me find the right answers. Thank you and have a wonderful day.