Hi! I am not DX with Sjogren's as of now, but I just want to be nice and say that I relate!
I have had recurrent UTI's for as long as I can remember, which also turned into pyelonepritis (kidney infection), which often comes back now. (I don't think the problem has ever truly been resolved actually, so it keeps coming back). My kidney issues turned into some damage, with recurrent blood and protein in my urine.
None of it has been DX as to what causes it though, other than them finding a diverticula of the bladder (signifying bladder damage as well), and recurrent issues with staph infection.
Cranberry is GREAT for the urinary tract. AZO cranberry tablets are good for everyday use. It doesn't seem to make any difference in MY infections, but I suffer very badly with recurrent infections all over my body (at this point, I feel like nothing is going to help me-- but I still take AZO regardless)!!!! Cranberry is essential. Give the tablets a try! Very inexpensive, OTC.
Eden