How long does it take for a UTI to go away without antibiotics?

It is possible for a UTI can go away on its own without antibiotics. In several studies of individuals assigned female at birth with UTI symptoms, 25% to 50% got better within a week! These results may tempt you to forego a visit to a physician, but it's important to monitor your symptoms. If your symptoms continue to get worse, or if you experience fever, chills, nausea, blood in your urine, or pain in your side, you should seek medical attention right away. These can be signs that the infection is spreading to you kidneys which can be life threatening.