Thank you for asking your query at DoctorSpring.
Your symptoms are consistent with UTI . The infection can spread to the kidneys, but I do not think that has happened in your case. Most likely this is simple UTI and there is no reason to worry. Back pain does NOT mean infection spreading. And 5th day is not that late.
However you should not delay the treatment. You health insurance should cover this. The Doctor will order for a urine routine and culture and then start you on an antibiotic like Norfloxacin. As you already know UTI is almost always a bacterial infection and antibiotics are must. You will start seeing good response and resolution of pain in a couple of days. Drink plenty of water. Cranberry juice helps in prevention of UTI. Once UTI has set in it has not much benefit.
So it's very simple. Get in touch with a Doctor asap. Get a urine test and antibiotic course - Drink plenty of water. (Your insurance should cover this as this a basic and common condition).
Hope this helps
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