recurrent kidney/urinary infections is not uncommon. it signifies the failure of the normal defence mechanisms of the body. these could include presence of immunosupressive state like diabettes, HCV
, HBV or other viral infections, use of certain medictions. Disturbence of the normal flow of urine like in cases of hydronephrosis
, reflux disease, obstructive uropathy
, renal stones
. prolonged duration of antibiotics, profylactic antibiotics, evaluation for underlying predisposing condition with help in decresing the frequency of episodes. inspite of this patients can have repeated infections. i think your doctor must be trying his best!
hope you get well soon.