Yes, I ve been on Sulfa for 5 days and broke out in an awful rash last night.I have been running a high fever (100-104), am super tired, dizzy, facilitate between chills and and being overly warm. Last night I had severe diarrhea.I went to the dr Wed. to get the Sulfa for a UTI and yesterday because of the high temp, Would the diarrhea be related to the allergy at all? Would the high fever be a result of the UTI, or something new?