Vaginal discharge is a fluid your body continuously produces to keep the vagina clean, lubricated, and protected from infection. It’s made up of 92 to 95 percent water, with the remaining fraction composed of proteins, natural oils, shed cells, and beneficial bacteria. Nearly everyone with a vagina produces it, and the amount, color, and texture shift throughout your life depending on hormones, your menstrual cycle, and overall health.
What Discharge Is Made Of
The fluid comes from glands in your cervix and vaginal walls. Its solid component is mostly mucin glycoproteins, which are the molecules responsible for that slippery or stretchy texture. Mixed in are immune cells, DNA from shed skin cells, and living bacteria that form part of your vaginal microbiome. Defense proteins like lactoferrin and lysozyme act as built-in antimicrobials, helping neutralize harmful germs before they can take hold.
This is why doctors describe the vagina as “self-cleaning.” The mucus physically traps and flushes out bacteria and their toxins, while the beneficial bacteria (primarily lactobacilli) produce lactic acid that keeps the vaginal pH between 3.8 and 5.0 in women of reproductive age. That moderately acidic environment makes it difficult for most infections to develop.
How It Changes Through Your Cycle
If you menstruate, you’ve probably noticed your discharge doesn’t look the same every day. Those shifts are driven by estrogen and progesterone levels at different points in your cycle.
- Right after your period (days 1 to 4): Dry or tacky, usually white or slightly yellow.
- Mid-follicular phase (days 4 to 9): Gradually becomes sticky, then creamy and cloudy, similar to yogurt in consistency.
- Around ovulation (days 10 to 14): Stretchy, clear, and slippery, often compared to raw egg whites. This texture helps sperm travel through the cervix.
- After ovulation (days 15 to 28): Returns to thick and dry, staying that way until your next period begins.
The volume varies too. Some people produce enough to notice it on underwear every day, while others rarely see much outside of ovulation. Both patterns fall within a normal range.
Discharge During Pregnancy and Menopause
Pregnancy increases discharge noticeably. Higher estrogen levels ramp up production, and the cervix forms a thick mucus plug that seals the opening to protect the developing fetus from infection. A steady, mild white discharge throughout pregnancy is expected.
After menopause, lower estrogen levels cause the vagina to produce less moisture overall. You’ll still make small amounts of discharge, but dryness becomes more common. The vaginal pH also tends to rise above 4.5 in postmenopausal women, which can make the tissue more susceptible to irritation or infection.
Signs That Something Has Changed
Because discharge is so variable, the most reliable warning sign isn’t a specific color or texture on its own. It’s a change from your personal baseline, especially when paired with other symptoms. Three of the most common infections each have a fairly distinct pattern.
Bacterial vaginosis (BV) produces thin, grayish discharge that tends to be heavier than usual. The hallmark is a strong, fishy odor that becomes more noticeable after your period or after sex. BV can cause irritation but typically isn’t painful.
Yeast infections look different. The discharge is thick and white, often described as cottage cheese-like, and usually doesn’t have a strong smell. Itching and burning are the primary complaints, and sex can be painful.
Trichomoniasis, a sexually transmitted infection, can produce frothy, yellowish-green discharge with a strong odor, along with irritation and discomfort during urination. Chlamydia and gonorrhea can also alter discharge, though chlamydia in particular is often asymptomatic, meaning you may have no visible changes at all.
When Discharge Signals a Problem
The Mayo Clinic flags these specific changes as worth getting evaluated:
- Greenish, yellowish, thick, or cheesy discharge
- A strong or unusual vaginal odor
- Itching, burning, or irritation of the vagina or vulva
- Redness, swelling, or color changes in the surrounding skin
- Bleeding or spotting between periods
None of these symptoms on their own confirm a diagnosis. BV and yeast infections can look similar to each other, and sexually transmitted infections sometimes mimic both. A provider can test your vaginal pH, examine a sample under a microscope, or run a swab to identify the specific cause.
Keeping Your Vaginal Environment Healthy
The most important principle is that the vagina handles its own internal cleaning through the mucus it produces. External care is simple: warm water on the vulva (the outer skin) when you bathe, and a mild, unscented soap if you prefer. Scented tampons, pads, powders, and sprays can disrupt the bacterial balance and increase infection risk.
Douching is the single biggest hygiene mistake to avoid. It strips away the protective bacteria and alters vaginal acidity, creating conditions where harmful organisms thrive. Women who douche weekly are five times more likely to develop bacterial vaginosis than those who don’t. Douching can also push existing bacteria upward into the uterus and fallopian tubes, raising the risk of pelvic inflammatory disease, ectopic pregnancy, and preterm birth. It does not prevent pregnancy or sexually transmitted infections, and it can actually increase STI risk by removing the bacteria that help defend against them.
Other factors that influence vaginal pH and discharge include antibiotics (which can kill off protective bacteria alongside the targeted infection), unprotected sex (semen is alkaline and temporarily raises vaginal pH), and diet and hydration. Wearing breathable cotton underwear and changing out of wet swimwear or workout clothes promptly can also help keep moisture levels in a range that discourages yeast overgrowth.