Cervical mucus
Fluid made by the cervix. Near ovulation it turns clear, slippery and stretchy, like raw egg white, helping sperm swim.
What does cervical mucus mean?
Cervical mucus: Fluid made by the cervix. Near ovulation it turns clear, slippery and stretchy, like raw egg white, helping sperm swim.
How it is used in the Splash library
Its Cervical mucus shifts as ovulation gets closer, and many people also notice its position changes.
From “Cervical mucus and cervix position”Tracking three signs daily: Basal body temperature, Cervical mucus and cycle length
From “Fertility awareness methods: the honest guide”It makes oestrogen, which rebuilds the womb lining and makes cervical mucus wetter and stretchier.
From “The four phases, in depth”It thickens the womb lining and makes cervical mucus slippery.
From “Meet your hormones”Watch for wetter, slippery Cervical mucus.
From “Your fertile window, explained”
Cervical mucus explained
Cervical mucus is the fluid made by glands in your cervix. Its amount and texture change through the cycle in response to hormones, and noticing these changes is one way to track when you might be fertile.
Around ovulation, higher oestrogen makes mucus thin, slippery and stretchy, which helps sperm swim through the cervix. After ovulation, progesterone makes it thicker and stickier, which blocks sperm.
What's typical
A common pattern is: dry or little mucus after your period, then sticky or creamy, then wet, clear and stretchy like raw egg white near ovulation, then back to thick or dry.
Hormonal contraception, breastfeeding, some medicines and infections can all change mucus. Arousal fluid and semen can be confused with it.
Mucus is one of the signs used in fertility awareness methods, which the NHS says should be learned from a trained teacher.
When to talk to a GP, nurse or pharmacist
- Discharge changes colour (green, grey or yellow), smells strong or fishy, or looks like cottage cheese.
- You have itching, soreness, pain when peeing, or bleeding between periods.
- You never notice any fertile-type mucus and are trying to conceive.
In the UK you can call NHS 111 for advice at any time. In an emergency call 999 (UK) or 911 (US). This is general information, not medical advice.
Where it comes up
Sources
Sources checked October 2026.
See it in your own cycle.
Log a few periods and Splash shows your patterns, privately, on your phone. Free, no account.