It could be Sjorgrens, but it also might not be.

I was tested (through a biopsy of the inside of the lip), for it last year because I too developed dry eye syndrome and have a lack of saliva, so have a dry mouth too.
The test came back negative.

My doc said that dry eye and dry mouth syndromes often occur in auto-immune disorders, but are not necessarily due to Sjogrens.

Artificial tear drops during the day & using the gel at night help to keep the eyes lubricated...don't use visine type stuff because it can cause more dryness if used too much.
Sipping water with a bit of cranberry or lemon juice mixed in it helps with the mouth/throat dryness. There are mouthwashes for dry mouth that work as well.

With love, Erika