Discharge from a woman is a fluid produced naturally by the vagina. It’s made of cells, bacteria, and moisture from the vaginal walls and cervix, and its job is to keep the vagina clean by flushing out old cells and maintaining a healthy environment. Most women produce less than one teaspoon of discharge per day, though the amount, color, and texture shift throughout the menstrual cycle, during pregnancy, and after menopause.
What Normal Discharge Looks Like
Healthy discharge is typically clear, white, or off-white. It can range from thin and watery to slightly sticky, depending on where you are in your cycle. It either has no smell or a very mild one. This fluid is not a sign of poor hygiene. It’s one of the body’s built-in cleaning systems, constantly moving bacteria and dead cells out of the vaginal canal.
The vagina maintains an acidic environment, with a normal pH between 3.8 and 4.5. This acidity is what keeps harmful bacteria in check, and the discharge itself is part of that defense. A pH that rises above 4.5 can sometimes lead to noticeable changes like a stronger odor or clumpy, discolored discharge, though a slightly higher pH is also normal just before a period and after menopause.
How Discharge Changes Throughout Your Cycle
Discharge isn’t the same every day. In the days after a period, you might notice very little. As ovulation approaches (roughly mid-cycle), your body produces more cervical mucus that’s transparent, stretchy, and slippery, often compared to raw egg white. This type signals peak fertility. After ovulation, discharge tends to become thicker, stickier, and white or creamy before tapering off again before the next period.
Sexual arousal also produces fluid, but it’s different from cervical mucus. Arousal fluid is clear and slippery, generated by glands in and around the vagina to provide lubrication. The key difference is that arousal fluid dissipates within about an hour, while cervical mucus persists much longer.
Discharge During Pregnancy
Early in pregnancy, many women notice a slight increase in discharge. This is called leukorrhea: thin, clear or milky white, with little to no smell. Higher estrogen levels drive the increase, along with greater blood flow to the uterus and vagina. The volume tends to keep rising as pregnancy continues, all the way through delivery. As long as it stays clear or white and doesn’t have a strong odor, this heavier discharge is a normal part of pregnancy.
Discharge After Menopause
When estrogen levels drop during and after menopause, the vaginal lining becomes thinner and drier. This condition, sometimes called vaginal atrophy, reduces the amount of normal vaginal fluid. Many women first notice this as dryness during sex. The acid balance of the vagina also shifts, which can make infections more likely. Some postmenopausal women notice a yellowish discharge, which can be a sign of this thinning and dryness rather than an infection, though it’s worth getting checked if it’s new or accompanied by irritation.
Signs of a Yeast Infection
Yeast infections produce a thick, white discharge often described as looking like cottage cheese. Itching and irritation around the vagina and vulva are the hallmarks, sometimes with redness or swelling. The discharge usually doesn’t have a strong odor. Yeast infections are caused by an overgrowth of fungus that normally lives in the vagina in small amounts, often triggered by antibiotics, hormonal changes, or a weakened immune system.
Signs of Bacterial Vaginosis
Bacterial vaginosis (BV) looks and feels different from a yeast infection. The discharge tends to be thin and grayish, often heavier than usual. The most distinctive feature is the smell: a fishy odor that’s especially noticeable after a period or after sex. BV happens when the balance of bacteria in the vagina shifts, allowing certain types to overgrow. It’s the most common vaginal infection in women of reproductive age and is not sexually transmitted, though sexual activity can increase the risk.
When Discharge Could Signal an STI
Several sexually transmitted infections cause changes in discharge, each with slightly different patterns. Gonorrhea can produce thick, cloudy, or bloody discharge. Trichomoniasis often causes discharge that’s greenish, yellowish, or frothy, sometimes with a noticeable odor, itching, and discomfort during urination. Chlamydia may cause abnormal discharge, though many people with chlamydia have no symptoms at all, which is why routine screening matters if you’re sexually active.
Genital herpes can also cause vaginal discharge, though it’s more commonly recognized by painful blisters or sores.
What Counts as Abnormal
A few specific changes are worth paying attention to. Discharge that turns green, yellow, or gray is outside the normal range. A thick, lumpy, or foamy texture is another signal, as is a strong or fishy odor. Itching, burning, or irritation of the vagina or vulva, especially if combined with a color or texture change, points toward an infection. Bleeding or spotting between periods, when it’s not related to your cycle, is also worth investigating.
None of these symptoms on their own confirm a specific cause. BV, yeast infections, and STIs can overlap in how they look and feel. A swab test or pH check can identify what’s actually going on, which matters because the treatments are different for each condition.