To have Sjogren's diagnosed, a rheumatologist is the likely specialist for you. There is treatment for it.. and you are so young, I'd like to see you get treatment right away if you can.
A holistic doctor might be able to direct you to a good specialist, but I'm not sure.
The eye infection that isn't getting better, the neuropathic pain, well...it does look likely for you. If you want a doctor experienced in diagnosing Sjogren's, contact the Sjogren's foundation.
http://www.sjogrens.org/
They may be able to tell you of doctor that are located in the area where you are living.
Good luck to you,
Billye