Vaginal discharge is a normal, healthy bodily function. Your vagina produces fluid every day to keep itself clean, moist, and protected from infection. The color, texture, and amount of this fluid shift throughout your menstrual cycle, during pregnancy, and as you age. Most of the time, discharge is nothing to worry about, but certain changes in color, smell, or consistency can signal an infection or other issue worth addressing.
What Healthy Discharge Looks Like
Normal discharge is clear, milky white, or off-white. It can be watery, sticky, gooey, thick, or pasty depending on where you are in your cycle. It typically has no strong odor, or only a very mild one. Everyone produces different amounts, and factors like birth control pills, pregnancy, and ovulation all influence volume.
The vagina maintains a naturally acidic environment, with a pH between 3.8 and 4.5. This acidity is part of what keeps harmful bacteria in check. The fluid your body produces plays a direct role in maintaining that balance, flushing out dead cells and keeping the vaginal lining healthy.
How Discharge Changes Throughout Your Cycle
If you have a roughly 28-day menstrual cycle, your discharge follows a predictable pattern. Right after your period ends (days 1 to 4), it tends to be dry or tacky, often white or slightly yellow-tinged. Over the next few days it becomes sticky, slightly damp, and white.
Around days 7 to 9, you’ll likely notice a creamy, yogurt-like consistency that feels wet and looks cloudy. Then, as you approach ovulation (days 10 to 14), discharge becomes stretchy, slippery, and resembles raw egg whites. This is your most fertile window. That wet, slippery texture exists for a biological reason: it makes it easier for sperm to travel through the vagina and reach an egg.
After ovulation, discharge dries up quickly. From roughly day 15 until your next period, it returns to thick and dry, or you may notice very little at all.
Discharge During Pregnancy
Pregnancy increases discharge noticeably. Rising estrogen levels cause the body to produce more fluid, and this ramped-up production serves an important purpose: it helps prevent infections by maintaining a healthy balance of bacteria and clearing away dead cells. During pregnancy, this discharge is sometimes called leukorrhea.
Normal pregnancy discharge is usually white, milky, or pale yellow. It tends to be thin with a mild odor and may feel slippery or mucus-like, especially as pregnancy progresses. A sudden change to a strong smell, green or gray color, or a dramatically different texture is worth bringing up with your provider.
Discharge After Menopause
As estrogen levels drop during and after menopause, the vaginal lining becomes thinner, drier, and less elastic. Discharge volume typically decreases, and some people experience persistent dryness, burning, or itching. When discharge is present, it may appear thin, watery, sticky, or yellow to gray in color. The vaginal pH also rises above 4.5 after menopause, which is normal for this life stage but can make the vagina more vulnerable to infections.
Signs of a Yeast Infection
Yeast infections produce a thick, white discharge often described as resembling cottage cheese. It usually doesn’t have a strong odor but comes with intense itching, redness, and sometimes a burning sensation during urination or sex. Yeast infections are caused by an overgrowth of fungus that naturally lives in the vagina, often triggered by antibiotics, hormonal changes, or a weakened immune system.
Signs of Bacterial Vaginosis
Bacterial vaginosis, or BV, is the most common vaginal infection in people of reproductive age. It produces a thin, grayish discharge that tends to be heavier than usual. The hallmark sign is a fishy odor that becomes especially noticeable after your period or after sex. Unlike a yeast infection, BV doesn’t typically cause significant itching or irritation. It happens when the normal balance of bacteria in the vagina shifts, allowing certain bacteria to multiply.
Signs of a Sexually Transmitted Infection
Some STIs change discharge in ways that overlap with other infections, which is why testing matters more than guessing. Trichomoniasis, one of the most common curable STIs, can produce a clear, white, yellowish, or greenish discharge that may be thin or frothy, often with a fishy smell. Gonorrhea and chlamydia can also cause unusual discharge, though chlamydia in particular is frequently silent, producing no noticeable symptoms at all.
Any new discharge that’s yellow-green, frothy, foul-smelling, or accompanied by pelvic pain or bleeding between periods is worth getting tested for.
Non-Infectious Causes of Changes
Not every change in discharge means an infection. Hormonal birth control can increase or decrease your baseline amount. Stress, diet changes, and new laundry detergents or soaps can all shift what you see. Scented hygiene products, douches, and fragranced tampons or pads can irritate the vaginal lining and alter discharge color or consistency. A forgotten tampon is another common culprit, often producing a strong, unpleasant odor and brownish or discolored discharge that resolves once it’s removed.
What Color and Smell Tell You
- Clear to milky white, mild or no odor: Normal, healthy discharge.
- White and thick, cottage cheese texture: Likely a yeast infection.
- Gray and thin, fishy odor: Likely bacterial vaginosis.
- Yellow-green or frothy, strong odor: Possible STI, especially trichomoniasis.
- Brown or blood-tinged: Often old blood from a period, but can indicate other issues if it persists outside your cycle.
- Thin, watery, or sticky after menopause: Common with lower estrogen levels.
How Infections Are Identified
If something seems off, a provider will typically take a sample of your discharge and examine it. The most common approach is a wet mount, where the sample is placed on a glass slide and checked under a microscope for bacteria, white blood cells, and other signs of infection. A whiff test mixes the sample with a chemical to see if it produces a fishy odor, which points toward BV. The provider may also check your vaginal pH, since a reading above 4.5 can indicate BV or another imbalance. These tests are quick, done in-office, and give results the same day in most cases.