Why do I get yeast infections before my period?
Last updated September 3, 2026.
Pre-period yeast infections are hormone-driven - estrogen and pH shifts favor yeast before bleeding. Treat fully each time; recurring flares deserve a confirmed diagnosis and a blood sugar check.
What to do
- Treat episodes fully - OTC antifungals work; finish the course.
- Confirm once with a swab - fishy odor points to BV, not yeast.
- Strip the contributors - no douching or scented products, per womenshealth.gov.
- Recurring flares: check blood sugar - and ask about suppression treatment.
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