Thank you for your query.
Well since you have been suffering from lupus , you must be knowing that kidneys are one of the primary organs that are affected by lupus wht we call as lupus nephritis
.You also have a strong family history of autoimmune disease
. Regarding sjogrens syndrome , yes people suffering from lupus can develop this disease secondarily . If you have symptoms such as excessive dryness of eyes , frequent blinking , grittiness in eyes , dryness of mouth , swelling over jaw bones due to enlarged parotids ,you may be having this disorder.
I advise you to consult your rheumatologist
at the earliest and get yourself evaluated for the disease activity so that appropriate treatment can be started at the outset.
If you have any further queries feel free to ask.
Wish you good health.