A UTI treated with antibiotics usually feels better within 1 to 2 days and clears over a 3 to 7 day course, while a yeast infection treated with an antifungal usually eases in 1 to 3 days and clears within about a week.
The timelines split because the causes differ: a UTI is bacterial and rarely resolves on its own, so waiting it out risks the infection moving up to the kidneys. A yeast infection is fungal, and mild cases sometimes settle without treatment, though most people want relief sooner. Severity changes the clock too: complicated or recurrent yeast infections often need 7 to 14 days of treatment, and a kidney infection needs a longer antibiotic course. Symptoms overlap enough that self-treating the wrong one wastes days, so confirm which you have before starting an over-the-counter antifungal. Finish the full antibiotic course even after the burning stops, and drink fluids normally through either illness.
How long each lasts
Common questions
How long does uti vs yeast last?
The two follow different clocks. UTI burning and urgency usually ease within 24 to 48 hours of starting antibiotics, and the full course runs about 3 to 7 days. A UTI rarely clears by itself, and untreated it can reach the kidneys, bringing fever, back pain, and vomiting. A yeast infection treated with an antifungal cream, suppository, or a single oral dose usually improves in 1 to 3 days and resolves within a week; stubborn or recurrent cases need 7 to 14 days. See a clinician if symptoms outlast a full course, keep coming back, or you develop fever, flank pain, or blood in your urine.