- Pain or burning when you urinate.
- An urge to urinate frequently but usually passing only small amounts of urine.
- Pain in the lower belly.
- Urine that looks cloudy, is pink or red, or smells bad.
- Pain in the flank, which is felt just below the rib cage and above the waist on one or both sides of the back.
- Fever and chills.
- Nausea and vomiting.
Some people have bacteria in their urinary tract without having any symptoms. This is called asymptomatic bacteriuria. Asymptomatic bacteriuria may lead to infections that cause symptoms, but in many cases it does not. It usually goes away without treatment.
Several other conditions, such as vaginal infections or irritable bladder, cause symptoms similar to those of a UTI. Your doctor may evaluate your health for one or more of these if you have urinary symptoms, depending on your medical history and how well you respond to treatment for a UTI.