Most cases of vaginal thrush clear up within a few days to one week with treatment. You should start feeling better within the first three days of using antifungal medication, though more severe infections can take longer to fully resolve. Without treatment, thrush rarely goes away on its own and can potentially worsen over time.
Timeline With Over-the-Counter Treatment
Antifungal creams and pessaries come in 1-day, 3-day, and 7-day courses. Regardless of which option you choose, symptom relief typically begins within the first three days. If your symptoms haven’t improved after seven days of treatment, that’s a signal to see a doctor rather than start another course on your own.
The shorter courses contain higher concentrations of medication per dose, so a 1-day treatment isn’t necessarily faster at clearing the infection. It simply delivers the full amount at once. Many clinicians consider the 7-day course the most reliable option, particularly for moderate or severe symptoms. In practice, most women find that itching and burning ease noticeably by day two or three, with discharge returning to normal over the following days.
What Happens Without Treatment
A mild yeast infection may occasionally resolve on its own, but this is rare. Thrush is caused by an overgrowth of fungus, and only antifungal medication actually eliminates it. Leaving it untreated risks the infection worsening, spreading to surrounding tissue, or in uncommon cases becoming a systemic infection that affects other organs. The practical takeaway: treating even a mild case is worthwhile, because waiting it out usually just means a longer stretch of discomfort with no guarantee it will clear.
Why It Takes Longer for Some People
Several factors can slow recovery or make thrush harder to treat. Pregnancy is one of the most common. Pregnant women typically need a full seven-day treatment course to clear the infection, as shorter courses cure only about half of cases in pregnancy. For infections caused by less common yeast strains during pregnancy, treatment may need to extend to two weeks.
Diabetes, a weakened immune system, and recent antibiotic use can also extend the timeline. These conditions create an environment where yeast rebounds more easily, so your body takes longer to regain its natural balance even with medication. If you have any of these risk factors and your symptoms aren’t resolving within a week, a longer or different treatment approach is likely needed.
Recurrent Thrush
About 5% of women experience recurrent thrush, defined as three or more episodes within a single year. This is a distinct pattern from a one-off infection that’s slow to clear. Recurrent cases often require a different treatment strategy, typically involving an initial course to clear the active infection followed by a maintenance regimen that continues for several months to prevent the yeast from rebounding.
If your symptoms come back within two months of finishing treatment, or if you find yourself reaching for over-the-counter products multiple times a year, it’s worth getting tested rather than self-treating. Women who have been correctly diagnosed with thrush in the past are still not reliably accurate at diagnosing themselves for future episodes. Conditions like bacterial vaginosis and some skin irritations mimic thrush closely, and treating the wrong condition means weeks of unnecessary symptoms.
Signs Your Infection Needs Medical Attention
The clearest signal is the seven-day mark. If you’ve completed a full course of treatment and symptoms persist, the infection either hasn’t responded to the medication or the diagnosis may be wrong. Other signs that warrant a visit include severe redness or swelling, cracked or raw skin around the vulva, or symptoms that initially improved but returned quickly after stopping treatment.
For a straightforward first episode of thrush treated with an over-the-counter antifungal, expect noticeable improvement within two to three days and full resolution within a week. Anything beyond that timeline, or any pattern of repeated infections, benefits from clinical evaluation and testing rather than another round of self-treatment.