Quick answer
What could vaginal discharge mean?
Normal vaginal discharge is clear or white, without strong odour, and varies with the menstrual cycle. Change in colour, smell, itch, or volume may indicate thrush, bacterial vaginosis, or an STI like chlamydia or trichomoniasis. See a GP or sexual health clinic for abnormal discharge — especially with pain, fever, or bleeding after sex. Do not douche — it worsens symptoms.
Vaginal discharge — normal vs abnormal
Vaginal discharge is normal and healthy — glands inside the cervix and vagina produce fluid that cleans, ** lubricates**, and protects against infection. Discharge changes with the menstrual cycle, hormones, pregnancy, and contraception.
Problems arise when character changes suddenly — colour, smell, volume, or associated itch, pain, or bleeding.
Normal discharge
Typical features:
- clear, white, or off-white
- consistency varies — watery mid-cycle, thicker before period
- mild or no odour
- no itching or burning
- increases at ovulation and with arousal
Hormonal influences:
- combined pill — often lighter discharge
- progesterone-only methods — variable
- pregnancy — increased thin milky discharge
- menopause — dryness replaces discharge as oestrogen falls
Knowing your baseline helps spot change.
Common causes of abnormal discharge
Thrush (candida)
- thick white — “cottage cheese” appearance
- intense itching, soreness, redness
- little or no smell
- not strictly STI — overgrowth of yeast
Treatment: antifungal pessaries/cream — see thrush guide.
Bacterial vaginosis (BV)
- thin, grey-white discharge
- fishy odour — worse after sex or period
- minimal itch
- imbalance of vaginal bacteria — not classic STI but linked to new partners
Treatment: metronidazole gel or tablets — GP or sexual health.
Trichomoniasis
- frothy, yellow-green discharge
- strong smell, itching, pain urinating
- STI — partner treatment essential
Chlamydia and gonorrhoea
- often minimal discharge — may be mucopurulent (yellow)
- pelvic pain, bleeding after sex
- see chlamydia — test even without symptoms
Pelvic inflammatory disease
- discharge plus lower abdominal pain, fever, deep dyspareunia
- emergency for fertility — PID guide
Other causes
- foreign body — forgotten tampon — sudden foul discharge
- ** dermatitis** — reaction to products
- cervical ectropion — benign cervical change — mucusier discharge
- cervical or endometrial cancer — blood-stained discharge, postmenopausal bleeding — GP urgent
When to seek help
Book GP or sexual health clinic:
- new colour — green, yellow
- foul or fishy smell
- itching, soreness, pain
- bleeding after sex or between periods
- pelvic pain or fever
- partner has STI
Same-day if pregnant with abnormal discharge or fever.
What happens at appointment
- history — symptoms, periods, contraception, sexual partners
- examination — speculum if indicated
- swabs — high vaginal, endocervical for chlamydia/gonorrhoea
- pH testing — BV vs thrush clue (BV pH >4.5)
- microscopy — clinic setting
Self-test kits available for some conditions — clinic confirms and treats partners.
Self-care — what helps and harms
Helpful:
- cotton underwear
- avoid perfumed soaps on vulva
- wipe front to back
- condoms with new partners
Harmful:
- douching
- ** scented pads/tampons**
- ** unnecessary antibiotics** — worsen thrush/BV balance
Discharge across life stages
| Stage | Pattern |
|---|---|
| Puberty | Oestrogen rises — new normal discharge |
| Reproductive years | Cyclical changes |
| Pregnancy | Increased — report abnormal |
| Menopause | Dryness common — local oestrogen if symptomatic |
Abnormal discharge is common and usually treatable — accurate diagnosis matters because thrush cream does not cure BV or chlamydia. When in doubt, test rather than guess.
Common questions
- What does normal vaginal discharge look like?
- Clear, white, or off-white — consistency from watery to thick white paste across the cycle. Increases mid-cycle around ovulation. Mild smell or none. No itching or soreness. Amount varies person to person — hormonal contraception and pregnancy increase discharge.
- How do I know if I have thrush or bacterial vaginosis?
- Thrush — thick white cottage-cheese discharge, intense itching, soreness, no strong fishy smell. BV — thin grey-white discharge, fishy smell especially after sex, minimal itch. Both need different treatment — self-diagnosis is often wrong; pharmacy or GP confirms.
- Can discharge be a sign of an STI?
- Yes — chlamydia, gonorrhoea, and trichomoniasis can cause discharge, often yellow/green, with pain urinating or pelvic pain. Many STIs have no symptoms — test after unprotected sex. Genital herpes causes ulcers more than discharge.
- Does discharge increase in pregnancy?
- Yes — normal physiological increase — thin, milky, mild smell. Report green/yellow discharge, itching, or foul odour in pregnancy — infections need prompt treatment. Thrush is common in pregnancy — use pregnancy-safe treatments only.
- Should I wash inside the vagina to reduce discharge?
- No — douching and harsh soaps disrupt healthy bacteria and worsen BV and irritation. Wash external vulva only with water or unperfumed soap. Avoid scented products and tight synthetic underwear.