You are suffering from what we call persistent uti. Since you are already on antibiotics for long time, you need to be evaluated for the cause for persistent uti. You need ultrasound
of the abdomen which you must have already done. You need x-ray examinations called intravenous urography and voiding cystourethrogram
to look for the function of your kidneys and also to see the reflux. Check your blood sugar levels.
I wish you a speedy recovery