You notice something on your underwear or when you go to the bathroom. You search for it. One article says completely normal, the next says possible infection, and a third mentions something you really did not need to read before bed. You are no clearer than when you started.
Vaginal discharge is one of the most commonly searched health topics among women, and one of the least clearly explained. This guide aims to fix that.
Most discharge is healthy. Some patterns are simple infections that a swab and a short course of medication clear easily. A few signals are worth knowing so you catch things early. Here is how to tell them apart.
This guide covers:
- What vaginal discharge actually is and why it happens
- How it changes throughout the month
- A colour-by-colour breakdown of what different discharge types usually mean
- How odour can tell you something discharge colour cannot
- The common infections that change discharge, and how they differ from each other
- When to speak to your gynaecologist
What vaginal discharge is
Vaginal discharge is produced by glands in the cervix and vaginal walls. It is a mixture of fluid, shed cells from the vaginal lining, and the bacteria that naturally live in the vagina. These bacteria, mostly Lactobacillus species, produce lactic acid and keep the vaginal environment slightly acidic (pH between 3.8 and 4.5). That acidity protects against overgrowth by other organisms (Ravel et al., 2011, Proc Natl Acad Sci, PMID 21278770).
The vagina is self-cleaning. Discharge is part of how it maintains that function. A healthy woman produces some discharge every day, and the amount and appearance varies from person to person and across the month.
The clinical name for normal, non-infectious vaginal discharge is leukorrhea (also written leucorrhoea), called safed pani (सफेद पानी) in Hindi. It is generally white or milky, possibly slightly off-white or clear, has a mild or barely noticeable smell, and causes no itching or soreness. If your discharge fits this picture, there is nothing to treat.
How discharge changes through your cycle
Discharge does not look the same on day 5 of your cycle as it does on day 21, and that is expected. Hormones drive these changes.
In the days after your period ends, discharge is usually minimal. As oestrogen rises toward ovulation (roughly mid-cycle in a typical cycle), it becomes clear, slippery, and stretchy, sometimes compared to raw egg white. This is fertile-quality cervical mucus. In the second half of the cycle, after ovulation, progesterone rises and discharge turns thicker, creamier, and whiter. In the day or two before your period, it may take on a slight brownish or pinkish tinge from a trace of blood mixing in.
All of this is normal variation.
For a closer look at white discharge specifically in the days before your period, see our guide to white discharge before your period. If you are pregnant and noticing more discharge than usual, that is covered in the white discharge in pregnancy guide. If you are trying to conceive and want to use discharge to track your fertile window, the cervical mucus guide walks through that in detail.
The colour guide: what different discharge types usually mean
This is the question most women are actually asking when they search for discharge information. Here is a breakdown by colour.
White or milky
White or milky discharge with no odour and no accompanying itch or soreness is almost always normal leukorrhea. It tends to be more prominent in the second half of the cycle, in the two weeks before a period. The amount varies between women and from day to day.
The exception: if white discharge is thick, clumped, and cottage-cheese in texture, with significant itching or burning around the vaginal opening, that is the more typical presentation of a yeast infection rather than ordinary leukorrhea.
For more on this, read our guide on Vaginal Yeast Infection.
Clear and stretchy
Clear, slippery, stretchy discharge is fertile-quality cervical mucus at or near ovulation. It is a healthy sign that your cycle is progressing normally.
Clear and watery
Thin, watery, clear discharge at other points in the cycle is common and normal. It can be more noticeable after exercise or arousal. On its own, without any colour, odour, or symptoms, no treatment is needed.
Yellow or green
Pale yellow discharge that has dried on underwear is often normal leukorrhea. Discharge that is distinctly yellow, frothy, or has an unpleasant odour is a different matter. Yellow-green frothy discharge with an offensive smell is the classic presentation of trichomoniasis, a sexually transmitted parasitic infection. A yellow or yellow-green discharge from the cervix itself, sometimes described as mucopurulent (thick and pus-like), can be a sign of chlamydia or gonorrhoea, even when there are no other symptoms (Paladine and Desai, 2018, Am Fam Physician, PMID 29671516).
Distinctly yellow or yellow-green discharge, especially with odour or discomfort, is worth a swab.
Grey or thin white with a fishy smell
This combination is the hallmark of bacterial vaginosis (BV). BV occurs when the normal balance of vaginal bacteria shifts, with a fall in Lactobacillus and an overgrowth of other organisms. It is the most common cause of abnormal vaginal discharge (Koumans et al., 2007, Sex Transm Dis, PMID 17621244). The fishy odour often intensifies after sex, because semen temporarily raises the vaginal pH. BV typically causes less itching than a yeast infection, which is one clinical difference between the two.
For more on this, read our guide on Bacterial Vaginosis. BV is diagnosed with a swab and treated with metronidazole or clindamycin. It is worth treating: in pregnancy, untreated BV is associated with an increased risk of preterm birth.
Brown
Brown discharge is almost always old blood. Blood turns brown as it slows and oxidises. The most common causes are the tail end of a period, mid-cycle spotting around ovulation, or small amounts of old blood leaving the uterus in the first day or two after a period ends. A trace of brownish spotting in very early pregnancy can be implantation bleeding, which is normal.
Persistent spotting unrelated to the expected cycle, or any bleeding or spotting in pregnancy, is worth a check. The brown discharge guide covers this in more detail.
Pink or blood-tinged
A faint pink tinge at mid-cycle is often ovulation spotting, caused by a brief oestrogen fluctuation. Pinkish spotting at the time of an expected period can be implantation bleeding if conception has occurred. Post-coital spotting (bleeding or pink discharge after sex) that happens more than once, or without a clear cause, is worth discussing with a gynaecologist.
The odour question
A healthy vagina has a smell. It is typically mild, slightly acidic, and varies a little across the month. It can be more noticeable after exercise or sex. This is not a problem, and it is not a sign that something is wrong.
The smells worth paying attention to:
A persistent fishy odour, particularly one that gets stronger after sex, is the classic sign of BV. The smell comes from amines produced by the anaerobic bacteria that overgrow in BV (Amsel et al., 1983, Am J Med, PMID 6600371).
A yeasty or bread-like smell is sometimes reported by women with yeast infections, though yeast infections tend to be noticed more by texture and itch than by smell.
A foul or rotten smell, especially alongside pelvic pain, fever, or unusual bleeding, needs prompt medical attention rather than home observation.
A vagina that has always had a mild smell, with no other symptoms and no recent change, is almost certainly fine.
If something has changed and you are not sure whether it falls within normal variation, a short conversation settles it much faster than days of searching. Dr. Suganya Venkat sees patients across India over video call and phone.
Send a message to Dr. Suganya on WhatsApp and she will respond personally.
Common infections that change discharge: a brief overview
These three are the most frequent causes of abnormal discharge. All are diagnosable with a swab and all are treatable.
Yeast infection (vaginal candidiasis)
Yeast infections are caused by an overgrowth of Candida, most often Candida albicans. The discharge is typically thick, white, and clumped, sometimes described as resembling cottage cheese. Itching and burning around the vaginal opening are the main symptoms. Around three in four women have at least one yeast infection during their lifetime (Sobel, 2007, Lancet, PMID 17560449).
Common triggers include antibiotics (which reduce competing Lactobacillus), elevated blood sugar in poorly controlled diabetes, hormonal changes during pregnancy, and prolonged use of tight synthetic underwear in a warm and humid climate. Standard treatment is an antifungal, either clotrimazole cream (applied locally) or oral fluconazole. Recurrent yeast infections (more than twice a year) need proper investigation to identify the underlying trigger, since repeated self-treatment without a confirmed diagnosis can miss a different cause entirely.
Bacterial vaginosis
BV is not an infection brought in from outside. It is a shift in the balance of bacteria already living in the vagina. The discharge tends to be thin, grey, or watery white, with a fishy odour. There is usually less itching than with yeast. BV is treated with metronidazole (oral tablets or vaginal gel) or clindamycin. It recurs in some women and is in no way a reflection of cleanliness or hygiene.
Trichomoniasis
Trichomoniasis is caused by a parasite (Trichomonas vaginalis) and is transmitted sexually. The discharge is classically frothy, yellow-green, and foul-smelling, with significant itching. Treatment is a single oral dose of metronidazole, given to both partners. A full STI screen is appropriate when trichomoniasis is diagnosed.
On vaginal hygiene products
Several patients ask about this, so it is worth addressing directly. The vagina cleans itself through discharge. Inserting soap, Dettol, scented intimate washes, or douches disrupts the natural acidity and Lactobacillus balance that protects it. This makes BV and yeast infections more likely, not less.
The vulva (the external skin) can be washed with plain water or a very mild unscented soap on the outside. Nothing needs to go inside the vagina. If you have been using an intimate wash and are noticing more frequent infections, the wash is often part of the problem rather than the solution.
When to see a gynaecologist
See your doctor if:
- Discharge has changed in colour (yellow, green, or grey) and the change is persisting
- There is a fishy, yeasty, or unpleasant odour that is new for you
- You have itching, burning, or soreness around or inside the vaginal opening
- You are pregnant and notice significant changes in discharge, any bleeding, or an unusual smell
- You notice spotting between periods or after sex
- A yeast infection has not cleared with standard over-the-counter antifungal treatment, or it is coming back more than twice a year
- You have had unprotected sex and want to rule out an STI
A vaginal swab takes a few minutes at a clinic. It removes the guesswork and means you get the right treatment rather than the wrong one. Most infections diagnosed this way clear within a few days. If you are also dealing with recurrent UTIs alongside discharge symptoms, the two can sometimes occur together; our guide to recurrent UTIs is a useful companion read.
Frequently asked questions
Is it normal to have vaginal discharge every day? Yes. Most women produce some vaginal discharge throughout the month. The amount and appearance change across the menstrual cycle, but daily discharge is entirely normal. It is your body’s natural cleaning mechanism.
Kya safed pani hona normal hai? (Is white discharge normal?) Haan, zyada tar safed ya halka pila discharge bilkul normal hota hai. Agar aapko koi khujli, jalan, ya tej badbu nahi aa rahi, toh yeh leukorrhea hai, jo sehat ki nishani hai. Agar in lakshano ke saath discharge aaye, toh doctor se milna sahi rahega.
What does normal vaginal discharge smell like? Normal discharge has a mild, slightly acidic smell. It is noticeable but not unpleasant. It may vary a little across the month and can be more apparent after exercise or sex. A smell that is distinctly fishy, yeasty, or foul, particularly if it is new, is worth having checked.
Can discharge cause itching without any infection? Yes. The skin around the vaginal opening can react to contact irritants: dyes in synthetic underwear, scented laundry detergents, panty liner adhesive, or tight clothing that traps moisture. If itching is present but the discharge itself looks and smells normal, switching to plain cotton underwear and fragrance-free laundry products often resolves it. Persistent itching that does not improve is worth discussing with a doctor.
Is yellow discharge always a sign of infection? Not always. Pale or off-yellow discharge with no odour may just be leukorrhea that has dried slightly. Discharge that is distinctly yellow or yellow-green, particularly if it is frothy or has an odour or causes discomfort, is more likely to signal an infection and warrants a swab to confirm.
How do I tell BV apart from a yeast infection? The two have different profiles. Yeast: thick, white, cottage-cheese texture; significant itching and burning around the opening; little to no odour. BV: thin, watery or grey-white discharge; fishy odour that often intensifies after sex; typically less itching. A swab from your gynaecologist confirms which it is. The treatments are completely different (antifungal for yeast, metronidazole for BV), so getting the diagnosis right before treating matters.
Does discharge change in India’s climate? The underlying characteristics of normal discharge are the same regardless of climate. In a hot and humid climate, some women notice slightly more discharge overall, and synthetic underwear can increase the risk of both irritation and yeast infections by trapping heat and moisture. Cotton underwear that allows airflow makes a genuine practical difference for women who are prone to recurrent infections.
Understanding your own normal across the month is the most useful thing you can take from this guide. Once you know what your discharge looks like in each phase of your cycle, a genuine change stands out clearly and you know when it is worth getting checked.
If something has changed and you are not sure what to make of it, you do not have to piece it together from search results. Dr. Suganya Venkat consults online, across India, over video call or phone.
Send her a message on WhatsApp and she will get back to you directly.
You can also explore the period health guide for a broader look at reading your cycle and understanding your body’s monthly patterns.
