Vaginal discharge can be one of those things you notice, Google, worry about—and then wonder whether you should have worried at all.
The reassuring part is that some vaginal discharge is completely normal. It is part of how the vagina maintains a healthy environment. Its amount and consistency can change around ovulation, before a period, during pregnancy and with hormonal changes. 1
So the goal isn’t to have no discharge.
The goal is to recognise your normal pattern—and notice when something has changed.
Quick Answer
Normal discharge is often clear, white or milky, without a strong unpleasant smell, and may become wetter or more noticeable around ovulation. 1
Discharge that is suddenly different—particularly with strong odour, itching, burning, pain, bleeding or a marked colour change—may need medical assessment. Common causes include bacterial vaginosis (BV), vaginal candidiasis and trichomoniasis; cervical infections such as chlamydia or gonorrhoea can also cause abnormal discharge. 2 3
Importantly, abnormal discharge does not automatically mean an STI. Some common causes, such as candidiasis and BV, are not simply a consequence of sexual activity.
What Normal Discharge Can Look Like
You may notice discharge that is:
- Clear or white
- Thin, slippery or slightly stretchy around ovulation
- Creamier at other points in the cycle
- Mildly noticeable in smell, but not strongly unpleasant
How Does Discharge Change During Your Cycle?
Vaginal discharge naturally changes with hormonal fluctuations throughout the menstrual cycle. Around ovulation, it may become clearer, wetter, slippery and stretchy. At other times, it may be thicker, creamier or less noticeable. These changes are often normal when they follow your usual pattern and are not accompanied by discomfort 1.
There is no single “perfect” appearance. Your own cycle pattern is useful information.
If the discharge has been similar for months and you have no discomfort, it is often simply part of normal vaginal physiology. 1
When Discharge May Need Treatment
White discharge with intense itching
A thick or clumpy discharge accompanied by significant itching, redness or soreness can occur with vulvovaginal candidiasis (yeast infection). 2
But don’t assume every white discharge is a yeast infection. Treating yourself repeatedly with antifungal medicines without knowing the cause can delay the correct diagnosis.
Thin discharge with a strong fishy smell
This pattern can occur with bacterial vaginosis (BV), a change in the balance of vaginal bacteria. BV is common, and some women have few or no symptoms. BV is not simply an STI, although sexual and vaginal-health factors can influence risk. A strong fishy smell, particularly with a change in discharge, is a reason to seek medical assessment. 2 4
Yellow or greenish discharge
Yellow or green discharge, particularly when accompanied by irritation, pain during urination or sex, or an unpleasant smell, deserves assessment.
Trichomoniasis, an STI, can cause abnormal discharge with itching, soreness and discomfort when urinating or having sex. 3
Other infections can produce similar symptoms, so colour alone cannot diagnose the cause.
Why Can Different Infections Cause Similar Symptoms?
Three common causes of abnormal vaginal discharge are vulvovaginal candidiasis (yeast infection), bacterial vaginosis (BV) and trichomoniasis. Yeast infections often cause intense itching and thick discharge; BV may cause thin discharge with a fishy odour; and trichomoniasis may cause unusual discharge with irritation or discomfort during urination. However, symptoms overlap, and some infections cause few or no symptoms. Colour, smell or consistency alone cannot confirm the cause 2.
What About Sexually Transmitted Infections?
This is where assumptions can be harmful.
Some STIs cause discharge, while many can cause no symptoms at all. Chlamydia and gonorrhoea, for example, may be silent but can cause complications if untreated. 5
If you have a new sexual partner, possible exposure, recurrent unexplained symptoms, pelvic pain or concerns about an STI, speak confidentially with a healthcare professional about appropriate testing.
An STI is a medical diagnosis—not a judgement about someone’s character or relationship.
How Is the Cause Found?
Your doctor may ask about:
- When the discharge changed
- Your menstrual cycle
- Itching, burning or pain
- Sexual and contraceptive history
- Recent antibiotics or self-treatment
- Pregnancy possibility
Depending on your symptoms, examination and testing may include vaginal pH, microscopy, swabs or molecular tests. Symptoms alone cannot reliably distinguish every cause. 2
What Happens During a Vaginal Discharge Check-Up?
Your healthcare professional may ask when the discharge changed, whether you have itching or pain, your menstrual and sexual health history, and whether you have tried any treatments. Depending on your symptoms, they may recommend an examination or a sample test to identify the cause. You can ask why a test is needed and what it involves 2.
That is why repeatedly buying an “infection tablet” from a pharmacy may not be the best approach.
What Can You Do at Home?
Keep things simple.
The vagina does not need internal cleansing. Avoid douching, perfumed vaginal washes and inserting herbs, antiseptics or other products into the vagina. These can disturb the vaginal environment. 4
For the external vulva, gentle washing with plain water is usually sufficient. Avoid putting soaps, washes or other products inside the vagina. 1
Wear breathable underwear if it feels comfortable, change out of damp clothing, and avoid products that consistently irritate your skin.
And remember: clean does not mean scent-free.
When to See a Doctor
Arrange an evaluation if discharge is:
- New or persistently different
- Strong-smelling or associated with significant itching
- Green, yellow or otherwise unusual for you
- Associated with burning while urinating
- Associated with pain during sex
- Associated with unexplained bleeding
What If You Are Pregnant?
Vaginal discharge can increase during pregnancy, but a new or concerning change should not automatically be assumed to be normal. Contact your maternity care team if you notice unusual discharge, particularly with bleeding, pelvic pain or fever. Prompt assessment is important when these symptoms occur during pregnancy 1.
Seek prompt medical care for severe pelvic or lower-abdominal pain, fever, feeling very unwell, or if you are pregnant and have new or concerning discharge, bleeding, pain or fever.
Key Takeaways
- Vaginal discharge is normal and changes naturally throughout the menstrual cycle. 1
- Clear, white or milky discharge without significant irritation is often physiological. 1
- A change in smell, colour, amount or consistency—especially with itching, burning or pain—may need evaluation. 2
- BV, candidiasis and trichomoniasis are common causes of abnormal discharge, but symptoms alone cannot always identify which one is responsible. 2 3
- Abnormal discharge does not automatically mean an STI.
- Avoid douching, perfumed vaginal products and self-treatment without knowing the cause. 4
- Persistent, painful or unusual discharge deserves proper assessment rather than repeated guesswork.
References
- American College of Obstetricians and Gynecologists (ACOG). Vulvovaginal Health. ACOG patient education resource covering vaginal health, normal discharge and vulvovaginal hygiene. ACOG — Vulvovaginal Health
- Centres for Disease Control and Prevention (CDC). Sexually Transmitted Infections Treatment Guidelines: Diseases Characterized by Vulvovaginal Itching, Burning, Irritation, Odor or Discharge. Clinical guidance on evaluating vaginal symptoms, differential diagnosis and appropriate laboratory testing. Last reviewed July 22, 2021. CDC — Vulvovaginal Symptoms and Discharge
- World Health Organization (WHO). Sexually Transmitted Infections (STIs). Overview of STI transmission, common symptoms, complications, prevention and the importance of testing. WHO — Sexually Transmitted Infections
- World Health Organization (WHO). Bacterial Vaginosis. Fact sheet describing bacterial vaginosis, common symptoms, diagnosis, treatment and the role of vaginal cleansing practices. Published November 21, 2025. WHO — Bacterial Vaginosis
- World Health Organization (WHO). Chlamydia. Fact sheet covering symptoms, asymptomatic infection, diagnosis, treatment and possible complications of untreated chlamydia. Published November 21, 2025. WHO — Chlamydia