What does yellow or green discharge mean?

Last reviewed June 1, 2026 by Dr. Sapna Jadhav, General Physician. Sources from ACOG, NHS, Mayo Clinic, CDC, NICE, NIH, Cochrane, and peer-reviewed journals.

Bottom linePale yellow discharge can be normal oxidized discharge with no odor or symptoms, but bright yellow or green discharge - especially with itching, a strong smell, or pain - usually signals an infection such as bacterial vaginosis, trichomoniasis, or another STI, and warrants a clinician swab test.

While a very pale yellow can be normal, bright yellow or green discharge is usually a sign that something needs attention.

When pale yellow is normal

• Light yellow discharge can simply be normal discharge that has been exposed to air and oxidized slightly
• If it's mild in color, has no strong odor, and causes no irritation, it's likely fine
• Some people naturally have discharge with a slight yellowish tint

When yellow or green is a concern

Bright yellow or yellow-green discharge

This may indicate:

• Bacterial vaginosis (BV) - Along with a fishy smell, especially after sex
• Trichomoniasis - A sexually transmitted infection (STI) that causes frothy, yellow-green discharge with a strong odor, along with itching and irritation
• Chlamydia or gonorrhea - STIs that can cause yellowish discharge, often with pain during urination or pelvic pain

Green discharge

Green discharge is generally not normal and often suggests:

• An active infection - Usually bacterial or an STI
• Trichomoniasis - One of the most common causes of green, frothy discharge

Accompanying symptoms to watch for

See a doctor if yellow or green discharge comes with:

• Strong or foul odor
• Itching, burning, or irritation
• Pain during urination or sex
• Pelvic or lower abdominal pain
• Fever

What to do

• Don't self-diagnose - The color alone doesn't tell the full story
• See your doctor - A simple swab test can identify the cause
• Don't douche - This can worsen infections by disrupting your vaginal flora
• Complete any prescribed treatment - Even if symptoms improve before you finish

Track any unusual symptoms in Femora's daily log so you have a clear record to share with your healthcare provider.