Urinary tract infection (UTI) symptoms can vary in severity and duration, depending on the individual and the type of infection. Typically, symptoms such as a frequent urge to urinate and cloudy or strong-smelling urine can last anywhere from a few days to a week if left untreated. However, with proper medical treatment, such as antibiotics, many people experience relief within 24 to 48 hours. If symptoms persist beyond this period or worsen, it may indicate ...