sjogrens and chemo

I have had a masectomy instead of a lumpectomy as I have Sjogrens and wanted to avoid having chemo, in order to try shrink the tumour. Ive learnt that chemo can cause a permanent worsening of the sjogrens symptoms. Do you have Sjogrens & have you had either chemo, radiation or Tamoxifen & what were your experiences? Also, If you are not on medication for sjogens & have had the above treatment, I would be particularly interested in hearing from you as you are more likely to be aware of how treatment afffected your existing symptoms.