Egg white cervical mucus (EWCM): definition

Egg white cervical mucus (EWCM) is clear, slippery, stretchy cervical fluid that looks like raw egg white. It appears when estrogen peaks in the days just before ovulation. EWCM helps sperm survive and swim toward the egg, so it's a sign of your most fertile days. It usually lasts one to three days, then turns thick or dry.
How it works in your cycle
Rising estrogen in the late follicular phase makes the cervix produce more watery, stretchy mucus. Its structure forms channels that guide sperm and protect them for up to five days. After ovulation, progesterone thickens it again.
- Check toilet paper or underwear, or gently collect some from the vaginal opening.
- Stretch it between finger and thumb.
- EWCM stretches an inch or more without breaking and looks clear.
Why it matters
If you're trying to conceive, the day of the most slippery mucus, sometimes called peak day, is usually a day or two before ovulation. That's prime time inside your fertile window. Combined with an ovulation predictor kit, it gives a good picture of timing.
Many people also feel more energetic, social and confident around these days, as estrogen peaks. Not seeing EWCM doesn't always mean you aren't ovulating: amounts vary with hydration, age and medicines like antihistamines. Read more in ovulation discharge and cervical mucus.
Talk to a doctor if your discharge smells, itches or changes color, or if you've been trying to conceive for a year (six months over 35) without success.
Frequently asked questions
Does EWCM mean you're ovulating?
It means ovulation is likely close, usually within a day or two. Only after ovulation does a BBT rise confirm it.
Can you have EWCM and not ovulate?
Yes, sometimes. Estrogen can rise without ovulation following, for example with PCOS.
Sources
This page is for information only and isn鈥檛 medical advice. If something worries you, please talk to a doctor.
Fertile window: definition and meaning
Signs of ovulation: definition and meaning