Hi. Ladybud's comments are so much smarter! I was thinking urinary only, dumb, since I've had both Gi and urinary problems over the years. Both can occur chronically in lupus, but I bet both can occur for other reaons. Like a GI "bug"---I had one last week & others in my high-rise did. Nasty & painful, but it abated in several days. I wouldn't worry about one episode. If whatever happened recurs, then I think you should follow up.
Like Ladybug said, we're anonymous, therefore I can share this: I'm in my worst urinary discomfort/urgency in years. Not a UTI, just that old frequency/urgency I've had on & off for years. UGH.
I hope your episode has stopped, that you feel safe here, and that you post whenever the mood strikes. Best wishes, Vee