Egg White Discharge: What It Tells You About Ovulation

Egg white discharge is clear, slippery, stretchy cervical mucus that your body makes when oestrogen peaks in the days just before ovulation. It marks your most fertile days. In a prospective study of 193 Italian women using the Billings method, the chance of conception from sex on a day with this mucus was about 29%, against 0.3% on a day with no noticeable secretions (Scarpa, Dunson and Colombo, 2006).

That is a big gap for something that costs nothing to notice.

I didn't realise the tiny ovulation window, and I wasn't aware exactly where that fell. Ovulation discharge is one of the few signs that shows up before the window closes, not after. So it is worth knowing what it can tell you, and what it can't.

What does egg white discharge mean?

Egg white discharge means your oestrogen is high and ovulation is probably approaching. Talking about vaginal secretions, the NHS says: "Around the time of ovulation, they become thinner and stretchy, a bit like raw egg white."

What to look for:

• Colour: clear or transparent, like raw egg white.
• Texture: slippery, stretchy or elastic.
• Sensation: wet or slippery at the vulva, not just damp.

You don't need to check internally. The studies behind these figures used what women noticed at the vulva, on their underwear or on toilet paper.

For anyone trying to conceive, these are the days that matter. The fertility awareness guideline from the College of Sexual and Reproductive Healthcare (CoSRH, formerly the FSRH) puts it plainly: "Women wishing to achieve a pregnancy are more likely to conceive when intercourse takes place on days when cervical secretions are noticeable."

One honest limit. Egg white discharge shows your body is preparing to ovulate. It is not proof that an egg was released.

If you would rather watch than read, Dr Lora Shahine, a US double board-certified OB-GYN and reproductive endocrinologist, walks through the four types of cervical mucus and how oestrogen and progesterone change them across the cycle.

What does cervical mucus look like at each stage of your cycle?

Cervical mucus moves from dry, to sticky, to creamy, to watery, to egg white, then back to sticky or dry once you have ovulated. Oestrogen drives the first half. Progesterone drives the second.

Table: cervical mucus by cycle stage, compiled September 2026. Sources: CoSRH guideline, 2015; NHS; Scarpa 2006; Stanford 2003; Ecochard 2015; Najmabadi 2021; Evans-Hoeker 2013; Bigelow 2004; Su 2017; Suarez and Pacey 2006; Gould 1984; Dunson 1999.

The numbers worth holding on to: about 0.3% on dry days, about 29% on egg white days, and on the peak mucus day itself about 38% for normally fertile couples against 14% for subfertile couples. Clear, watery mucus also counts as peak-type in the ultrasound study (Ecochard 2015), so those days are likely close to it.

These figures come from couples having intercourse. The nearest insemination data I could find is Meyer and colleagues, 1996, where cervical mucus score at cup insemination with donor sperm did not predict pregnancy across 524 cycles; I could not find the same day-by-day figures for insemination.

Why does texture matter so much?

• Oestrogen rises → water content goes up, mucin goes down → the mesh loosens → sperm can get through.
• Ovulation happens → progesterone takes over → secretions turn thick and sticky → the way in is blocked.

Fertile mucus is also where sperm wait for the egg. Motile sperm have been recovered from it 112 and 120 hours after insemination. The CoSRH guideline puts mean sperm survival at 1.47 days, with only a 1% probability of lasting 7 days, and the egg at around 17 hours, with 24 hours more commonly quoted. Sperm can wait. The egg can't. There is more on this in how long sperm stay in the body.

👉 Egg white discharge is the door opening. Sticky or dry afterwards is the door closing.

Try It: What Is My Cervical Mucus Telling Me?

The table above, turned into something you can use today. Pick what you notice and see the fertility level, the hormone behind it and what it means for timing.

What Is My Cervical Mucus Telling Me?

Pick what you notice today, at the vulva, on your underwear or on toilet paper. You do not need to check internally. You will see the fertility level, the hormone behind it and what it means for timing, taken from the table above. Nothing you pick is saved or sent anywhere.

Dry, nothing to see Sticky or pasty Creamy, like lotion Watery and clear Egg white: clear and stretchy Thick, sticky or dry again after wet days Something unusual: colour, smell, itching or soreness

Pick one option above to see what it means.

 

 

 

 

 

Information, not a diagnosis. The conception figures come from studies of couples having intercourse. I could not find the same day-by-day cervical mucus data for insemination. Not seeing egg white mucus does not mean no chance this cycle. If anything about your discharge worries you, see a GP or a sexual health clinic.

When does egg white discharge appear, and how long does it last?

Egg white discharge usually appears in the days just before ovulation, and peak-type mucus lasts around 6 days on average. In a pooled analysis of 528 women without known fertility problems, the mean was 6.4 days per cycle and the median 6. It is not the same every month: 72% of women varied by more than 3 days between their own cycles (Najmabadi et al, 2021).

The "peak day" is the last day of it, not the wettest. You only know which day that was the day after, once secretions have thickened or gone. It fell within 4 days either side of estimated ovulation in 97.8% of the 93 cycles with both a peak day and LH surge identified (Fehring, 2002).

Day 14 is a myth for most of us. Only about 30% of women have a fertile window that sits entirely within cycle days 10 to 17 (Wilcox et al, BMJ, 2000).

So don't wait for day 14. Act on the first slippery day. A European study of 782 women concluded that mucus quality on the day matters more than exact timing relative to ovulation (Bigelow et al, 2004).

How reliable is cervical mucus compared with ovulation tests, temperature and apps?

Cervical mucus is very good at showing that the fertile window is open and less good at naming the exact day of ovulation. Urine LH tests have the strongest trial evidence. Temperature charting and calendar apps are the weakest.

Table: ways to identify the fertile window, compiled September 2026. Sources: Cochrane review, 2023; NICE guideline NG257, 2026; NHS; Guida 1999; McGovern 2004; Johnson 2018; CoSRH 2015, Ecochard 2015 and Evans-Hoeker 2013 as above.

The studies used different yardsticks (the same day, or the whole six-day window), so this is not a league table. Two things stand out:

• Mucus is good at the window, poor at the exact day: 96% sensitivity for the six-day window in one study (Ecochard 2015), but only 48.3% same-day agreement against 100% for LH tests in a separate study of 40 women (Guida 1999).
• LH tests are not perfect either: false positives in more than 7% of cycles.

The honest evidence position. No randomised trial shows that tracking cervical mucus raises live birth rates. The supportive data are observational: a fecundability ratio of 2.29 means roughly double the chance of conceiving in a given cycle, but only 20 women in that study checked consistently. LH tests do have moderate-quality trial evidence: if the chance of a live birth without them is 16%, with them it is 16% to 28%. Combining signs looked best in a cohort of 5,688 women, where charting, cervical fluid and urine LH together were linked to a fecundability ratio of 1.48 (Stanford et al, 2019).

So the fair summary: free, well correlated with your fertile days, best used alongside LH tests. Use the first wetter, clearer mucus as your cue to start testing, and have sex or inseminate on the slippery days. NICE says insemination should be timed around ovulation. And if tracking is wearing you down, NICE says sex every 2 to 3 days optimises the chance of pregnancy, no charts needed.

What does discharge after ovulation look like, and can it tell you if you're pregnant?

After ovulation, discharge turns thick and sticky or dries up, and no, discharge cannot reliably tell you that you are pregnant.

• Cervical mucus before your period: the NHS notes that discharge usually gets heavier just before your period. So more discharge late in your cycle is normal either way.
• Cervical mucus in early pregnancy: the NHS describes it as usually thin, clear or milky white, which overlaps almost completely with ordinary discharge.

The NHS list of early pregnancy signs does include more vaginal discharge without any soreness or irritation. But it lists a missed period first, and says early symptoms usually start at around 4 to 6 weeks pregnant. No study found for this article shows that discharge can tell a pregnant cycle from a non-pregnant one.

When you are in the two week wait, every twinge feels like a clue. Discharge isn't one. A pregnancy test is the only reliable answer, so here is when to take a pregnancy test after ovulation.

What can make cervical mucus harder to read?

Recent hormonal contraception, lubricants, spermicides, infections and breastfeeding can all change cervical mucus or make it harder to read.

• Coming off the pill: women who had stopped oral contraception in the previous 12 weeks had significantly poorer cervical secretion scores (CoSRH, 2015).
• Spermicides and lubricants: spermicides, or barrier methods with additional lubricant, can make secretions harder to read (CoSRH, 2015).
• Infection: a vaginal infection makes mucus observation unreliable (Su et al, 2017).
• Breastfeeding and age: partial breastfeeding was associated with more mucus days, and women aged 30 and over who had not had a baby saw fewer peak-type days than those under 30, 5.3 against 6.4 (Najmabadi et al, 2021).

No egg white mucus does not mean no chance. The American Society for Reproductive Medicine, a US body, says the probability of pregnancy is highest when mucus is slippery and clear, but that you do not have to see this kind of mucus for pregnancy to happen.

When is discharge a sign of infection, and when should you see a GP?

A change in smell, colour or texture, or any itching, soreness, bleeding or pain, points to infection and needs checking. Healthy discharge, including egg white discharge, is clear or white with no strong or unpleasant smell (NHS).

The NHS matches changes to likely causes:

• Smells fishy: bacterial vaginosis.
• Thick and white, like cottage cheese: thrush.
• Green, yellow or frothy: trichomoniasis.
• With pelvic pain or bleeding: chlamydia or gonorrhoea.
• With blisters or sores: genital herpes.

Bacterial vaginosis is the one to know about here. Its discharge can be greyish-white, thin and watery, which sounds a lot like ovulation discharge, and half of women with BV have no symptoms. The strong fishy smell, particularly after sex, is the giveaway. See a GP or sexual health clinic if you think you have it. The NHS says there is a small chance of complications in pregnancy, such as premature birth or miscarriage.

The NHS says to get help from NHS 111 if:

• Your discharge changes colour, smell or texture.
• You produce more discharge than usual.
• You feel itchy or sore.
• You bleed between periods or after sex.
• You get pain when peeing, or pelvic pain.

Do not self-diagnose, and do not wash inside your vagina. Sexual health clinics can help too, and often give faster results than GP surgeries.

Thrush. See a GP if it is your first time, if it keeps coming back (more than 4 times in 12 months), if treatment has not worked, or if you are pregnant or breastfeeding (NHS).

If you are pregnant. Call your midwife if your discharge smells unpleasant, is green or yellow, or you feel itchy or sore. Contact your midwife or doctor immediately for any vaginal bleeding.

If it is taking a while. NICE NG257 says assessment should be offered after 1 year of unprotected vaginal intercourse without conceiving, or after 6 cycles of artificial insemination. It also says referral should be offered at presentation if you are aged 36 years or over, or if either partner has a suspected or known clinical cause of infertility. If you never notice any mucus changes and your periods are irregular too, mention it at that appointment.

Egg White Discharge and Ovulation: Frequently Asked Questions

What does it mean if your discharge is egg white?

It means your oestrogen is high and ovulation is probably approaching. Secretions become clear, wet, slippery and stretchy, like raw egg white, which lets the most sperm through. It shows your body is preparing to ovulate. It is not proof that an egg was released.

Can I be pregnant if I have egg white discharge?

Egg white discharge on its own is not a sign of pregnancy. It is a sign of high oestrogen before ovulation. After ovulation, progesterone normally makes secretions thicker, stickier or absent. The NHS does list more vaginal discharge among possible early signs of pregnancy, but says early symptoms usually start at around 4 to 6 weeks pregnant. A pregnancy test is the only reliable answer.

What does high fertility discharge look like?

High fertility discharge is clear, wet, slippery and stretchy, like raw egg white, often with a wet or slippery sensation at the vulva. Lower fertility discharge is thick, creamy, whitish or yellowish with a damp feeling, and the least fertile days feel dry or merely damp. You do not need to check internally.

Does sticky discharge mean you've already ovulated?

Not necessarily. Sticky discharge appears twice in a typical cycle: early on, as oestrogen starts to rise after the dry days that follow a period, and again after ovulation, when progesterone thickens secretions. The clue is the order. Sticky after a run of wet, egg white days suggests ovulation has probably happened. Sticky before any wetter mucus means your fertile window is likely still ahead.

Keep Reading: Helpful TTC Guides

These go deeper on timing, testing and the wait afterwards:

• Best Time to Get Pregnant: When to Inseminate for Conception
• How Long Do Sperm Stay in the Body?
• Two Week Wait Symptoms: What Happens After Ovulation
• The Real Symptoms of Ovulation (What I Missed)