<s>[INST] I was diagnosed with a kidney infection and given Cipro, took 6 days but was still feeling awful so I went to the ER.  Urine was cloudy, showed blood, protein and yeast, was given new antibiotic, macrobid, (5 days now) still running low grade temperature and have flank and bladder pain.  Is my infection resistant to these antibiotics?  Should I go back to the ER? [/INST] Urine culture should be performed to identify bacteria and sensitivity to antibiotic. I hope ultrasound must also be done for seeing status of kidney, bladder,prostate and to rule out any pathology. Sometimes severe infections take very long to subside. Take appointment with urologist also. Urine culture sensitivity is done to see for resistant bacteria to identify with which antibiotic it can respond to. Often prostate gland, seminal vesicle situated near bladder are also infected and USG will identify size of prostate, any pathology </s>