Healthy vaginal discharge is clear, milky white, or off-white. Its texture can range from watery to thick and pasty, and the amount varies from person to person. Any shade outside that range, or a sudden change in smell or consistency, usually signals something specific happening in your body. Here’s what each color typically indicates.
Clear or White Discharge
This is the baseline. Your vagina produces some amount of discharge every day as part of its self-cleaning process. A healthy vagina maintains an acidic environment with a pH between 3.8 and 4.5, and that discharge is part of what keeps things in balance. The amount you produce fluctuates based on where you are in your menstrual cycle, whether you’re on hormonal birth control, and whether you’re pregnant.
During ovulation (roughly the middle of your cycle), discharge often becomes more slippery and stretchy, similar to raw egg whites. This is completely normal and reflects a surge in estrogen. After ovulation, it tends to get thicker and stickier.
Thick, Cottage-Cheese White Discharge
White discharge that’s clumpy, thick, and looks like cottage cheese points to a yeast infection. The texture is the key difference from normal white discharge. Yeast infections usually come with other hard-to-miss symptoms: itching or burning in and around the vagina, redness and swelling of the vulva, small cracks in the skin around the vaginal opening, burning when you pee, and pain during sex.
Yeast infections are extremely common and result from an overgrowth of fungus that naturally lives in the vagina. Antibiotics, hormonal shifts, and a weakened immune system can all trigger them. Over-the-counter antifungal treatments work well for most people, though a first-time infection is worth confirming with a healthcare provider since other conditions can mimic the symptoms.
Gray or Grayish-White Discharge
Thin discharge that looks gray, grayish-white, or even slightly green, paired with a strong fishy odor, is the hallmark of bacterial vaginosis (BV). BV happens when the balance of bacteria in the vagina shifts, allowing certain types to multiply too much. The fishy smell is often the most noticeable symptom and tends to get stronger after sex.
BV is the most common vaginal infection in women of reproductive age. It’s not a sexually transmitted infection, though sexual activity can increase the risk. It does require treatment with prescription medication, because untreated BV can make you more susceptible to STIs and cause complications during pregnancy.
Yellow or Green Discharge
Discharge that’s distinctly yellow, yellowish-green, or green often signals an infection, particularly a sexually transmitted one. Trichomoniasis, one of the most common curable STIs, produces a thin discharge that can be clear, white, yellowish, or greenish, frequently with a fishy smell. It may also be frothy. Other symptoms include genital itching, burning, redness, and discomfort when urinating.
Gonorrhea and chlamydia can also cause yellowish or greenish discharge, though many people with these infections have no symptoms at all. If your discharge has turned a noticeable yellow or green, especially alongside pain, burning, or odor, STI testing is the logical next step. All three of these infections are treatable with antibiotics.
One caveat: a very faint yellow tint to otherwise normal discharge, with no smell or irritation, can simply be dried discharge on underwear exposed to air. Context matters.
Pink Discharge
Pink discharge is a small amount of blood mixed with normal vaginal fluid. The most common causes are benign. Light spotting around ovulation can tint discharge pink. Sex can irritate the cervix slightly and produce a bit of pink spotting, especially during pregnancy when the cervix has more blood flow and bleeds more easily.
For anyone who could be pregnant, pink or light brown spotting about 10 to 14 days after ovulation may be implantation bleeding, which occurs when a fertilized egg attaches to the uterine lining. It’s very light, lasts a day or two at most, and doesn’t progress into a heavier flow like a period would.
Brown Discharge
Brown discharge is almost always old blood. When blood leaves the body slowly, it has time to oxidize, which turns it from red to brown. This is why you often see brown discharge at the very beginning or tail end of your period, when flow is lightest.
Outside your period, brown spotting has several common explanations. Hormonal birth control, especially pills and IUDs, frequently causes breakthrough bleeding in the first few months of use as your body adjusts. This is more likely with low-estrogen formulations, because estrogen helps stabilize the uterine lining. Without enough of it, the lining can shed at random points in your cycle, producing brown spotting between periods.
Hormonal imbalances unrelated to contraception can do the same thing. If estrogen levels are too low, the uterine lining becomes unstable and breaks down irregularly. During perimenopause, fluctuating estrogen causes irregular bleeding or spotting that can appear brown, pink, or red. Occasional brown discharge in any of these scenarios is expected, but persistent or unexplained brown spotting outside your period is worth investigating.
Red or Bloody Discharge Outside Your Period
Spotting between periods happens to many people occasionally and is often harmless, caused by ovulation, hormonal contraception, or cervical irritation. However, persistent bloody or watery discharge with a foul odor, particularly if it’s heavy, can be a symptom of more serious conditions including cervical cancer. This is rare, especially in people who get regular screenings, but it’s the reason unexplained bleeding or blood-tinged discharge that doesn’t resolve deserves medical attention.
How Pregnancy Affects Discharge
During pregnancy, your body ramps up discharge production. This pregnancy-related discharge is thin, clear or milky white, and has little to no smell. It’s essentially a more abundant version of normal discharge, and it increases as the pregnancy progresses. The purpose is protective: the extra fluid helps prevent infections from traveling up to the uterus.
Any discharge during pregnancy that turns green, yellow, gray, or develops a strong odor warrants prompt attention, since vaginal infections during pregnancy can affect outcomes. Similarly, bright red bleeding, heavy watery discharge, or anything that looks like tissue should be evaluated quickly.
What Warrants a Closer Look
Color alone doesn’t always tell the full story. The combination of color, smell, consistency, and accompanying symptoms is what distinguishes normal variation from something that needs treatment. The patterns that point toward an infection or other issue include: greenish, yellowish, thick, or cottage-cheese-like discharge; a strong or fishy vaginal odor; itching, burning, or irritation of the vagina or vulva; and bleeding or spotting that falls outside your normal period. If your discharge has changed noticeably and stayed that way for more than a few days, especially with any of these other symptoms, that’s useful information to bring to a provider. Most causes of abnormal discharge are common, well-understood, and straightforward to treat.