Hello Thank you for placing your query on health Care Magic What you describe can definitely be an allergic reaction to the antibiotics. Especially if there is any itching. My suggestion would be to stop any further doses till you have consulted your pediatrician or pediatric surgeon. But allergy usually does not present with fever. The UTI may still be persisting. The antibiotics need to be changed preferably according to her reports of urine culture and sensitivity (if it was done before starting the antibiotics). In addition if she has recurrent episodes of UTI she needs to be evaluated for vesico-ureteric reflux (a condition in which urine goes back to the kidneys from the bladder). She will require an ultrasound abdomen and a micturating cystourethrogram. Hope that helps God bless you