Healthy vaginal discharge is typically clear to white, and its color shifts naturally throughout your menstrual cycle. But discharge can also turn yellow, green, gray, pink, or brown, and each color tells you something different about what’s happening in your body. Here’s what each one means.
Clear to White Discharge
Clear, stretchy discharge is the hallmark of a healthy vagina doing its job. Around ovulation (roughly mid-cycle), discharge often becomes slippery and resembles raw egg whites. At other points in your cycle, it may be thicker, stickier, and more opaque white. Both are normal. The volume varies from person to person, but most people notice it increases around ovulation and again just before a period.
White discharge that becomes very thick, chunky, or looks like cottage cheese is a different story. That texture is the classic sign of a yeast infection. It can range from watery to homogeneously thick, and it’s sometimes whitish-yellow rather than pure white. Yeast infections also tend to cause intense itching and redness around the vulva, which helps distinguish them from normal white discharge.
Yellow or Green Discharge
Yellow or green discharge usually signals an infection, especially when it comes with a strong odor or a frothy texture. Trichomoniasis, a common sexually transmitted infection, classically produces yellow to greenish discharge that may look frothy or bubbly. Up to half of people with trichomoniasis have no symptoms at all, so the discharge may be the only noticeable sign.
Yellow discharge that looks thick or pus-like can also point to a cervical infection caused by gonorrhea or chlamydia. These infections sometimes produce a cloudy, mucus-and-pus mixture at the cervix. A faint yellowish tint to otherwise normal discharge isn’t always cause for concern, but discharge that’s distinctly yellow or green, particularly with an unusual smell or irritation, warrants testing.
Gray or Off-White Discharge With Odor
Thin, grayish-white discharge with a fishy smell is the signature of bacterial vaginosis (BV). About 90% of people with symptomatic BV have a white or gray vaginal discharge, and roughly 44% report a foul smell as their primary complaint. The discharge tends to be thin and homogenous rather than clumpy or chunky, and the odor often becomes more noticeable after sex.
BV happens when the balance of bacteria in the vagina shifts, allowing certain types to overgrow. The vagina’s natural pH normally sits around 3.8 to 4.5, but with BV it rises above 4.5, creating an environment where odor-causing bacteria thrive. BV isn’t sexually transmitted, but it’s one of the most common reasons people seek care for abnormal discharge.
Pink or Brown Discharge
Pink and brown discharge both contain blood, just in different amounts. Pink discharge is a small amount of blood mixed with normal vaginal fluid, while brown discharge is older blood that has had time to oxidize before leaving the body.
Common, non-concerning causes include:
- Ovulation spotting: slight spotting or very light-colored discharge containing blood around mid-cycle, when the ovary releases an egg
- Period starting or ending: brown or pinkish discharge in the day or two before and after your period is simply old blood clearing out
- Cervical irritation: sex, a pelvic exam, or even a tampon can cause minor irritation that leads to pink or light brown spotting
- Implantation bleeding: some people notice light pink spotting when a fertilized egg attaches to the uterine wall, typically 6 to 12 days after conception
Persistent brown or pink discharge outside of these situations, especially between periods or after menopause, is worth getting checked out.
Discharge Changes During Pregnancy
Pregnancy increases discharge volume noticeably, driven by rising estrogen levels and greater blood flow to the pelvis. This heavier discharge is sometimes called leukorrhea. It’s usually thin, white or milky, and mild-smelling. Many people notice it starting in the first trimester and increasing as pregnancy progresses.
Toward the end of pregnancy, discharge may become even heavier and contain thicker mucus. This can include the mucus plug, a dense collection of mucus that seals the cervix throughout pregnancy. Passing parts of the mucus plug indicates the cervix is softening, though it doesn’t reliably predict exactly when labor will begin. Any discharge during pregnancy that turns green, yellow, or has a strong odor should be evaluated, since infections like BV and trichomoniasis can affect pregnancy outcomes.
Discharge After Menopause
After menopause, declining estrogen levels cause the vaginal walls to become thinner and drier. Discharge typically decreases in volume and may change in character, becoming thin, watery, and sticky. The color can shift to yellow or gray. This is part of a broader set of changes sometimes called genitourinary syndrome of menopause, which can also include vaginal dryness, irritation, and discomfort during sex. Any new or unusual discharge after menopause, particularly if it’s bloody or has an odor, should be evaluated since the list of possible causes narrows after your periods have stopped.
Colors That Need Attention
The color of discharge alone doesn’t diagnose anything, but certain combinations of color, texture, and smell are reliable signals. Green or frothy discharge with irritation strongly suggests trichomoniasis. Thick, cottage cheese-like white discharge with itching points toward a yeast infection. Thin gray discharge with a fishy smell is the textbook pattern for BV. And pus-like or cloudy discharge from the cervix raises concern for gonorrhea or chlamydia.
Changes that happen alongside pelvic pain, burning during urination, sores, or bleeding between periods add urgency. Any sudden shift in the color, consistency, or smell of your discharge that doesn’t resolve within a few days is worth getting tested rather than guessing, since several infections share overlapping symptoms and need different treatments.