There is always the possibility that the bacteria is resistant to the antibiotics that were prescribed.
Normally when a urine sample is obtained, it is sent for culture and the bacteria's sensitivity to various antibiotics are tested for. This can ensure that the bacteria isn't resistant to the antibiotics that were given.
If the symptoms continue, I would consider a referral to a urologist. An ultrasound of the kidneys can be considered if you are having pain in the kidney area.
These options can be discussed with your personal physician.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin, M.D.
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