White discharge before your period: what's normal and what's not

Why discharge turns white before your period

Your cervix makes mucus that changes with your hormones. Around ovulation, high estrogen makes it clear, slippery and stretchy. After ovulation, in the luteal phase, progesterone takes over and the mucus becomes thicker, stickier and white or creamy. Some people have less discharge in this phase; others notice a creamy white increase just before their period. Both are normal.

White discharge may also look slightly yellowish once it dries on underwear. That's usually just oxidation, not infection.

Types of white discharge

White discharge and early pregnancy

Rising estrogen and blood flow in early pregnancy often increase discharge. It's typically thin to milky white with a mild smell (sometimes called leukorrhea). Because luteal-phase discharge looks similar, discharge alone can't tell you whether you're pregnant. If your period is late, a test is the way to know. See PMS vs pregnancy symptoms.

Thrush vs normal white discharge

Thrush is a common yeast infection. It's more likely after antibiotics, in pregnancy, with poorly controlled diabetes, and for some people in the days before their period. Signs that point to thrush rather than normal discharge:

• Itching and irritation around the vulva and vagina
• Soreness or stinging, especially when peeing or during sex
• Thick, white, clumpy discharge with little or no smell
• Redness or small cracks in the skin

Pharmacies sell thrush treatment, but if it's your first time, you're pregnant, under 16 or over 60, it keeps coming back (four or more times a year), or treatment doesn't work, see a doctor. Bacterial vaginosis and STIs can look similar and need different treatment.

Bacterial vaginosis: the other common cause

Bacterial vaginosis (BV) happens when the usual balance of bacteria in the vagina shifts. It isn't a sexually transmitted infection, but it's more common after a new partner, and with douching or scented products. The discharge is usually thin, gray-white and more plentiful, with a strong fishy smell that can be stronger after sex or during your period. It often doesn't itch. BV is treated with antibiotics from a doctor or clinic, and treating it matters, especially in pregnancy.

Keeping discharge healthy

• Wash the vulva with plain water or an unscented wash, once a day is plenty.
• Avoid douches, scented pads, bubble baths and feminine sprays.
• Wear breathable cotton underwear and change out of wet swimwear or sweaty gym clothes.
• Use condoms with new partners; they help prevent STIs and BV.

Learn your own rhythm

Logging discharge for a couple of cycles shows you a pattern: dry, then creamy, then stretchy around ovulation, then thick and white before your period. Once you know your normal, it's much easier to notice when something changes.

Discharge, body and mood

Thicker discharge before your period lines up with the luteal phase, when many people feel more sensitive, tired or self-conscious about their bodies. Itching or worry about an infection can add a lot of stress to an already heavy week. Please know that vaginal infections are extremely common and treatable, and asking for help is completely normal. See mood by cycle phase.