Green vaginal discharge ranges from a faint yellow-green tint to a darker, more vivid green, and it almost always signals an infection or irritation that needs attention. The shade, texture, and smell can vary depending on the cause, but any discharge that looks distinctly green is considered abnormal. Here’s what to look for and what different appearances typically mean.
What Green Discharge Actually Looks Like
Green discharge isn’t one uniform color. It can appear as a pale, washy yellow-green that you might initially mistake for normal discharge, or it can be a more obvious grey-green or brownish-green. The key distinction from healthy discharge is that normal vaginal fluid is clear, white, or slightly off-white. Once you’re seeing a noticeable green hue on your underwear or when you wipe, something is off.
Texture matters just as much as color. Green discharge can show up as thin and watery, thick and clumpy, or frothy and bubbly, almost like it has tiny air pockets in it. The frothy type is especially distinctive and points toward a specific infection. Volume often increases too. You may notice more discharge than usual soaking through your underwear or requiring a liner when you normally wouldn’t.
Smell is the other giveaway. Green discharge frequently comes with a strong, unpleasant odor, often described as fishy. Healthy discharge has a mild scent or none at all, so a sharp change in smell alongside a color change is a reliable sign that something needs treatment.
Frothy, Bubbly Green Discharge
If your discharge looks foamy or bubbly with a greenish or yellow-green color, the most likely cause is trichomoniasis, a sexually transmitted infection caused by a parasite. This is the infection most closely associated with green discharge specifically. The CDC describes trich discharge as thin or increased in volume, ranging from yellowish to greenish, and often accompanied by a fishy smell.
Beyond the discharge itself, trichomoniasis typically causes itching, burning, or redness around the genitals and discomfort when you pee. Not everyone with trich has all of these symptoms, and some people have very mild signs, but the combination of frothy green discharge with a foul smell and genital irritation is a classic pattern. Trichomoniasis is treated with a course of antibiotics, and both you and any sexual partners need treatment to prevent passing it back and forth.
Thick or Cloudy Yellow-Green Discharge
A cloudier, thicker yellow-green discharge can point to gonorrhea or chlamydia. Both of these STIs frequently cause no symptoms at all, which is part of what makes them so common. When symptoms do appear, the discharge tends to look cloudy and yellowish or yellow-green rather than the vivid, frothy green seen with trich.
Chlamydia, when it does produce discharge, most often shows up as yellow or simply different from your normal. Gonorrhea follows a similar pattern. Because both infections are often silent, a change in discharge color to anything in the yellow-green range is worth getting tested for, even if you don’t have pain or other obvious symptoms. Left untreated, both can lead to pelvic inflammatory disease and long-term fertility problems.
Brownish-Green Discharge With Strong Odor
A brownish-green discharge with a particularly foul smell can result from nonspecific vulvovaginitis, a general inflammation of the vagina and vulva. This type of discharge is often accompanied by irritation around the vaginal opening and labia. It can also signal a forgotten or retained object in the vagina, such as a tampon. A retained tampon can produce discharge that turns yellow, green, pink, grey, or brown, and the smell is usually the first and most noticeable symptom, often strong enough that it’s hard to ignore.
If you suspect a retained tampon or other object, it’s important to have it removed promptly. The longer it stays, the worse the smell and discharge become, and the higher the risk of a more serious infection developing.
Accompanying Symptoms to Pay Attention To
Green discharge rarely shows up alone. The symptoms that come with it help narrow down what’s causing it:
- Itching and burning: Common with trichomoniasis and general vulvovaginitis. The irritation can range from mild to intense enough to disrupt your day.
- Fishy or foul odor: Strongly associated with trichomoniasis and bacterial infections. A fishy smell that gets worse after sex is a particularly telling sign.
- Pain when urinating: Can accompany trich, gonorrhea, or chlamydia. This happens because the infection inflames tissue near the urethra.
- Increased discharge volume: Most infections that cause green discharge also increase the amount of fluid, sometimes noticeably.
Green Discharge During Pregnancy
Pregnancy naturally increases vaginal discharge, so many people expect to see more fluid than usual. But green, grey, or yellow discharge during pregnancy is not part of that normal increase. It can signal an infection that carries additional risks when you’re pregnant, including, in rare cases, preterm labor or infection of the amniotic sac. Getting any unusual discharge evaluated early in pregnancy gives you the best chance of straightforward treatment before complications develop.
What Healthy Discharge Looks Like by Comparison
Normal vaginal discharge shifts throughout your menstrual cycle. It can be clear and stretchy around ovulation, white and creamy in the days before or after your period, or thin and watery at other points. The color stays in the range of clear to white to slightly off-white, and the smell is neutral or very mild. Any shift into green, grey, or vivid yellow, especially paired with a strong odor or irritation, falls outside this normal range and points to an infection that responds well to treatment once identified.