you have not mentioned your age, if u have Diabetes?
Getting recurrent urine infection is not a regular kidney infection
First need to look for any organic cause for urine infection by doing sonography
, or CT scan
Also further tests like urine culture, RFT, blood sugar level are required.
If you are elderly or diabetic you may not get fever during infection.
Antibiotics has to begiven based on urine culture report and for long duration.
If there is not any organic pathology long term antibiotic prophylaxis
needs to be considered.
But everything above has to be done only in consultation with your doctor.