Welcome Terrijean. Sorry to hear about your reaction to Bactrim. Allergic reaction to meds are no fun, I know I have had more than my share.

As to your question about Lupus, there is a sticky at the top of the forum with several links to lupus information. Since I really don't know anything about Lupus, I have MS, that's where I would start. Hopefully, someone here who has Lupus will chime in with some answers.