Yellow Vaginal Discharge: Normal Causes and When to Worry

• Pale, smooth, odourless yellow discharge with no itching is usually normal, especially around your period, on a new contraceptive, or after it dries on underwear.
• Bright yellow, frothy, foul-smelling, or itchy discharge usually signals an infection such as trichomoniasis, bacterial vaginosis, chlamydia, or gonorrhoea.
• Many sexually transmitted infections cause no symptoms, so testing matters even in a long-term relationship; treat the partner too.
• Skip V-Wash, Everteen, and other intimate washes; FOGSI and ACOG advise against them because they disturb protective lactobacilli.
• See a doctor within a week for a fishy or foul smell, green tint, itching, pelvic pain, or bleeding between periods; seek same-day care for fever, severe pain, or pregnancy with bleeding.

Healthy vaginal discharge is mostly water, mucus from the cervical glands, shed skin cells, and protective lactobacilli. Across a normal cycle its colour shifts from clear and stretchy at your most fertile point to white, off-white, or pale yellow at other times.

A yellow tint can come from several sources, most of them harmless:

• Oxidation. Discharge that looks clear or white inside the vagina can dry to a pale yellow shade once it sits on underwear or a panty liner for a few hours, especially in hot, humid Indian weather.
• Mild dehydration. Lower water content concentrates the natural pigment in mucus.
• A trace of blood. A tiny amount of menstrual blood at the start or end of a period can tint discharge yellow or yellow-orange. If the shade leans more orange or brown, see our guides on orange discharge and brown discharge.
• White blood cells. When the immune system reacts to an infection or irritant, neutrophils gather in the discharge and, with bacterial by-products, produce a brighter, richer yellow that does not fade.

• Pale, smooth, cream-yellow
• No itching, smell, or pain
• No change in volume
• Around a period, on new contraception, in pregnancy, or in perimenopause

When yellow discharge is bright, frothy, smelly, and itchy, the leading suspect is trichomoniasis, a curable sexually transmitted infection caused by the parasite Trichomonas vaginalis. The World Health Organization estimates more than 150 million new cases worldwide each year, and India contributes a substantial share.

Classic symptoms include:

• Frothy yellow or yellow-green discharge with a strong fishy odour
• Intense vulval itching, redness, and swelling
• Pain during sex (dyspareunia) and burning on urination (dysuria)
• Sometimes a "strawberry" cervix visible on speculum examination

Bacterial vaginosis (BV) is the most common cause of abnormal discharge in Indian women of reproductive age. It more typically looks thin and grey-white, but when it mixes with a little menstrual blood, or coexists with trichomoniasis or chlamydia, the discharge can take on a yellow tint.

BV is a disturbance of the vaginal microbiome in which protective lactobacilli are crowded out by anaerobic bacteria such as Gardnerella vaginalis. The hallmark is a fishy smell, often stronger after sex when alkaline semen raises the vaginal pH. If odour is your main concern, our guide on vaginal odour, fishy versus normal goes deeper.

FOGSI vaginitis guidelines diagnose BV using the Amsel criteria: thin homogeneous discharge, a vaginal pH above 4.5, a positive whiff test with potassium hydroxide, and clue cells on microscopy. First-line treatment is oral metronidazole 500 mg twice daily for 7 days, or vaginal metronidazole gel 0.75% for 5 nights, both inexpensive (around INR 100 to INR 250 per course). Clindamycin cream is an alternative for those who cannot tolerate metronidazole.

Risk factors include douching, daily use of intimate washes, new sexual partners, and smoking. FOGSI and ACOG specifically recommend against routine intimate washes such as V-Wash, Clean & Dry, and Everteen; our review of intimate washes and soaps in India explains why plain water is enough. If BV keeps returning, read our guide to recurrent bacterial vaginosis, and to understand the chemistry, see normal vaginal pH balance. BV, yeast, and UTI are easy to mix up, so our side-by-side comparison can help you tell them apart.

Both chlamydia (Chlamydia trachomatis) and gonorrhoea (Neisseria gonorrhoeae) can produce yellow, yellow-green, or pus-like cervical discharge, but most infected Indian women have no symptoms at all. When symptoms do appear, they include yellow discharge, bleeding between periods or after sex, pelvic pain, painful urination, and lower abdominal discomfort.

Untreated, these are leading preventable causes of tubal infertility and ectopic pregnancy in India. NACO-supported clinics offer free NAAT testing on vaginal swabs or first-catch urine; private labs charge roughly INR 600 to INR 1,800 per test, or INR 3,000 to INR 5,000 for a full STI panel at Thyrocare, Metropolis, Dr Lal PathLabs, or SRL.

• Chlamydia is treated with a single oral dose of azithromycin 1 g (around INR 50 to INR 150) or doxycycline 100 mg twice daily for 7 days. Read more in our guide to chlamydia in Indian women.
• Gonorrhoea now needs an intramuscular injection of ceftriaxone 500 mg because of widespread resistance to older oral antibiotics. See our detailed guide on gonorrhoea in Indian women.

Pelvic inflammatory disease (PID) is an infection that has spread up into the upper genital tract, usually as a complication of untreated chlamydia, gonorrhoea, or BV. Yellow or pus-like discharge is a common sign, along with lower abdominal pain, fever, deep pain during sex, irregular bleeding, and tenderness on internal examination.

PID is a major cause of chronic pelvic pain, tubal infertility, and ectopic pregnancy in India. Mild outpatient cases are treated with a single intramuscular dose of ceftriaxone 500 mg, oral doxycycline 100 mg twice daily for 14 days, and oral metronidazole 500 mg twice daily for 14 days, costing roughly INR 500 to INR 1,500 in total. Severe cases need hospital admission for intravenous antibiotics and, occasionally, drainage of a tubo-ovarian abscess.

Early treatment protects the fallopian tubes; every week of delay raises the risk of infertility. Always ask for a proper STI workup with NAAT testing rather than just empirical antibiotics. NACO clinics are confidential, free, and offer same-day treatment with partner notification. Our dedicated guide on PID and why silent PID matters covers recovery and fertility preservation in detail.

Beyond the common infections, several less frequent conditions can cause yellow discharge:

• A retained foreign body, most often a forgotten tampon, condom fragment, or piece of menstrual product, causes foul-smelling dark yellow-brown discharge that needs prompt removal and antibiotics. To reduce this risk, see our guides on tampon safety and toxic shock syndrome and toxic shock syndrome and period products.
• Atrophic vaginitis in post-menopausal women causes thin yellow discharge with vulval dryness and pain during sex, treated with topical estrogen; read our guide to atrophic vaginitis and the genitourinary syndrome of menopause.
• Cervical polyps or a cervical ectropion can produce yellow mucus that streaks with blood; these are usually benign, and our explainer on cervical erosion and ectropion describes when treatment is needed.
• Allergic or irritant vulvitis from intimate washes, perfumed pads, latex condoms, or spermicides causes itching and yellow discharge without infection. Our broader guide to vulvovaginitis and to vaginal and vulval itching covers this.
• Fistulas between the bladder or rectum and the vagina (after a difficult childbirth or surgery) cause persistent discharge that smells of urine or faeces.
• Cervical or vaginal cancer can cause persistent watery yellow or brown discharge in older women. The FOGSI cervical screening guideline recommends a Pap smear or HPV test every 3 to 5 years for women aged 30 to 65; see our guide to cervical cancer screening in India.

A FOGSI-affiliated gynaecologist visit in private practice typically costs INR 600 to INR 2,500; NACO clinics in government hospitals are free. Expect a structured workup:

• A detailed history covering the shade (pale versus bright yellow), smell, texture, itching, sexual activity, contraception, last period, recent antibiotics, and intimate-wash use.
• A speculum examination to inspect the cervix and vaginal walls for friability, ectropion, polyps, or a visible foreign body.
• A vaginal pH paper strip (below 4.5 supports yeast or normal discharge; above 4.5 supports BV or trichomoniasis).
• Wet-mount microscopy to look for yeast hyphae, clue cells, or moving parasites.
• Where indicated, swabs for chlamydia and gonorrhoea NAAT, plus the offer of HIV, syphilis, and hepatitis B testing under NACO protocols.

• Within a week: bright, frothy, smelly, green, itchy, or with pelvic pain or abnormal bleeding
• Same day: high fever, severe pain, heavy bleeding, forgotten tampon, or pregnancy with bleeding

• World Health Organization — Trichomoniasis (sexually transmitted infections fact sheet))
• ACOG — Vaginitis (Bacterial Vaginosis, Trichomoniasis, Yeast)
• NHS — Vaginal discharge
• National AIDS Control Organisation (NACO), India — STI/RTI services and guidelines
• CDC — Pelvic Inflammatory Disease (PID) Treatment Guidelines