Discharge that smells cheesy or looks like cottage cheese is almost always a sign of a vaginal yeast infection. The thick, clumped texture and mild sour-milk odor come from an overgrowth of Candida, a type of fungus that normally lives in the vagina in small amounts. Yeast infections are extremely common and usually straightforward to treat with over-the-counter antifungal products.
What Causes the Cheesy Texture and Smell
Your vagina naturally contains a balance of bacteria and yeast. When something disrupts that balance, Candida can multiply and shift from its dormant form into an active one that burrows into the vaginal lining. Your immune system responds with inflammation, and the combination of fungal overgrowth and immune cells produces that characteristic thick, white, clumpy discharge. It often looks like wet cottage cheese or crusted milk on underwear.
The smell is typically mild, sometimes described as sour or like spoiled milk. It’s distinctly different from the strong, fishy odor associated with bacterial vaginosis, which is a bacterial imbalance rather than a fungal one. If your discharge is thin, grayish, and smells noticeably fishy (especially after your period or after sex), that points toward BV rather than yeast, and it requires a different treatment.
Other Symptoms That Usually Come With It
Cheesy discharge rarely shows up on its own. You’ll likely also notice:
- Itching and irritation in and around the vagina and vulva
- Burning during urination or intercourse
- Redness and swelling of the vulva
- Soreness or general discomfort in the vaginal area
If you have the cottage-cheese discharge plus itching, a yeast infection is the most likely explanation. If you have the discharge but none of the other symptoms, or if antifungal treatment doesn’t help, something else could be going on.
Common Triggers for Yeast Overgrowth
Antibiotics are one of the most common triggers. They kill off the protective bacteria (Lactobacillus) that normally keep Candida in check, giving the yeast room to multiply. Hormonal shifts can also play a role. Research tracking daily vaginal microbiome changes found that certain progestin-only contraceptives can suppress Lactobacillus growth, which may make yeast overgrowth more likely.
Moisture is another big factor. Wearing damp underwear, sitting in a wet swimsuit, or wearing non-breathable fabrics creates exactly the warm, humid environment yeast thrives in. Diet can sometimes contribute as well. Some people find that fermented foods or certain dietary patterns seem to trigger infections, though studies haven’t pinpointed a specific nutrient like sugar or fat as a direct cause. Intense exercise was also linked to shifts in vaginal microbiome diversity in the same daily-tracking study, likely because of prolonged moisture and friction.
How Yeast Infections Are Treated
Most uncomplicated yeast infections clear up with antifungal creams or suppositories available at any pharmacy without a prescription. These come in various formats: a single-day suppository, a three-day course, or a seven-day course depending on the product strength. All work by killing the Candida fungus directly.
If you prefer not to use a topical product, a single oral antifungal pill (fluconazole) is available by prescription and works for most straightforward infections. For severe infections with significant swelling, redness, or cracking of the skin, a longer course of treatment (seven to fourteen days of topical antifungal, or two doses of the oral pill spaced three days apart) is typically needed.
If you’re pregnant, only topical antifungal treatments are recommended, applied for a full seven days.
When Infections Keep Coming Back
Some people deal with yeast infections four or more times a year. Recurrent infections generally need a longer initial treatment (seven to fourteen days instead of three) followed by a maintenance phase. This often means taking a weekly oral antifungal for up to six months to keep the yeast suppressed while your vaginal ecosystem rebalances.
Recurrent infections can also be caused by less common strains of Candida that don’t respond well to standard antifungals. These cases sometimes require different treatment approaches, so if over-the-counter products aren’t working after two or three attempts, it’s worth getting a culture done to identify the specific strain.
A Lookalike Condition Worth Knowing About
There’s a lesser-known condition called cytolytic vaginosis that mimics a yeast infection almost exactly: itching, burning, white or yellowish discharge, and pain with sex. The difference is that it’s caused by too much Lactobacillus (the “good” bacteria), not by yeast. This matters because antifungal treatments won’t help, and they may even make things worse.
One useful clue is timing. Cytolytic vaginosis tends to worsen in the week before your period and improve during menstrual flow, because menstrual blood is more alkaline and helps neutralize the overly acidic environment that excess Lactobacillus creates. If that pattern sounds familiar and antifungal treatments haven’t worked for you, this condition is worth discussing with a healthcare provider. Treatment involves raising vaginal pH with baking soda, either as a sitz bath or vaginal suppository.
Reducing Your Risk
The most practical steps focus on keeping the vaginal environment stable. Wear breathable cotton underwear and change out of damp clothing quickly after swimming or exercise. If you’re on antibiotics for another infection, you can ask about using a preventive antifungal alongside them. Avoid douching or using scented products inside the vagina, both of which disrupt the bacterial balance that keeps yeast in check.
Drying underwear in direct sunlight rather than in shade can also help, since UV exposure kills lingering fungal spores on fabric. It’s a small detail, but for people prone to recurrent infections, these incremental habits add up.