I recently received antibiotics for a uti and my doctor told me to come back immediately if I had fever, nausea, etc. I do not have a fever, however I have a bad sore throat and diarhhea, both of which are listed as possible serious side effects of the medicine. However, I recently started a job working with children and its very possible I might just be getting a cold or done other virus. Does this sound like side effects of the medicine (in which case I need to go back to the doctor) or just a coincidental virus?