Hello dear Understand your concern Causative factor of persistent UTI: E. coli, Staphylococcus saprophyticus (10 to 15 percent). Enterococcus, Klebsiella, Enterobacter, and Proteus Diabetes mellitus, neurologic conditions, chronic institutional residence, You should consult the urologist for better treatment. Treatment are below take ceftazidime parentrally. You should shift to oral therapy with in 72 hr as you able to tolerate oral drugs. Follow up urine culture and urine analysis after 14 days to confirm the eradication of bacteria. Take plenty of water. Tablet Paracetamol 500 mg three times a day if fever is present. Tablet cetrizzine once daily if itching Urine alkali agent like potassium citrate take fruit juice of cranberry, orange and papayaa Maintain hygiene after sex and urination, wipe pelvic area frequently. Wear loose cotton inner wear Hope this advice help you. Thank you. Get well soon. Best regards Dr. Sagar