As Soon as Something Changes
There is no waiting period. If your discharge has changed and it is bothering you, book.
Thrush, bacterial vaginosis and infection look similar from the outside and are treated completely differently. Swabbing first means you get the right treatment rather than the most likely one, which matters when the wrong treatment can make things worse.
Some vaginal discharge is entirely normal, and it changes through the menstrual cycle, in pregnancy, with contraception and with age. What matters is a change from what is normal for you: a different colour, a different smell, a different amount, or discharge alongside itching, soreness, pain or bleeding.
The difficulty is that the common causes produce very similar symptoms, and guessing between them is unreliable even for clinicians. Thrush, bacterial vaginosis and trichomoniasis all cause discharge and irritation, and they need three different treatments. That is why repeated courses of over the counter thrush treatment so often fail: the problem was never thrush.
A proper assessment sorts it out. A doctor examines you, takes the appropriate swabs, and you get a specific answer with next day results and treatment that matches the actual cause.

There is no waiting period. If your discharge has changed and it is bothering you, book.
You have discharge alongside fever, severe pelvic or lower abdominal pain, or you feel unwell. That combination can indicate pelvic inflammatory disease, which needs treating promptly to protect your fertility. Call us the same day, or attend A and E if you are very unwell.
Mention it when you book. Some causes of discharge matter more in pregnancy and some treatments are avoided.
Usually available across all ten clinics, Monday to Friday, 8am to 7pm, and Saturday, 9:00am to 2:00pm.
Step 1
Same day slots available. You can ask for a female clinician.
Step 2
Your doctor asks what has changed, and examines you. It takes a few minutes.
Step 3
Swabs taken to identify the specific cause, and to check for STI causes where relevant.
Step 4
Next day results with the specific cause identified, and treatment that matches it.

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Genuinely relevant for recurrent symptoms, since membership includes free prescriptions and ten consultations a year, and recurrent thrush or BV often needs several appointments. Twelve-month minimum commitment, auto-renews unless cancelled.
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Short cards, each linking to its own page. Deliberately brief, so the condition pages keep their own ranking.
Thrush
A yeast overgrowth. Thick white discharge, often described as cottage cheese-like, with itching and soreness. Not an STI. Very common and quickly treated. CTA: Thrush Testing and Treatment → /sexual-health/thrush-testing
Bacterial Vaginosis
An imbalance in normal vaginal bacteria. Thin, grey or white discharge with a distinctive fishy smell, often worse after sex. Not an STI, and easily treated. CTA: Bacterial Vaginosis → /sexual-health/bacterial-vaginosis
Trichomoniasis
A parasite and an STI. Frothy yellow-green discharge with an unpleasant smell, plus soreness. Frequently missed because it is mistaken for thrush or BV. CTA: Trichomonas Testing → /sexual-health/trichomonas-testing
Chlamydia and Gonorrhoea
Both can cause discharge, and both often cause nothing at all. Both are tested in our screening panels. CTA: Chlamydia Testing → /sexual-health/chlamydia-testing
Non-infectious Causes
Normal cyclical change, pregnancy, hormonal contraception, perimenopause, a retained tampon, or irritation from soaps, washes and douching. Worth mentioning that vaginal washes and douching frequently cause the problem they are marketed as solving.
Causes Needing Prompt Assessment
Discharge with fever or significant pelvic pain can indicate pelvic inflammatory disease. Discharge with bleeding between periods or after sex needs assessing, and cervical screening may be relevant.
| Private | NHS | |
|---|---|---|
| Access | Book directly, same day usually | GP appointment, or sexual health clinic |
| Examination and swabs | Same appointment | Same, at sexual health clinics |
| Results | Next day | Typically several days to two weeks |
| Presumptive treatment | Avoided, we test first | Often given, reasonably, to save an appointment |
| Female clinician | On request | On request, subject to availability |
| Cost | See Module 6 | Free |
NHS sexual health clinics and GPs handle this well and free of charge, and many sexual health clinics take walk-ins. Private assessment is worth paying for when you want a next-day result, a chosen appointment time, or when repeated presumptive treatment has not worked and you want it properly tested.
Yes, and it changes through your cycle. What matters is a change from what is normal for you.
Most commonly because it is not thrush. Bacterial vaginosis and trichomoniasis cause similar symptoms and need different treatment. A swab settles it.
Usually yes, and it takes a few minutes. Swabs are the reliable way to identify the cause.
Yes, on request.
For trichomoniasis and other STIs, yes. For thrush and BV, usually not, since they are not sexually transmitted, though recurrent BV in same sex partners is sometimes an exception worth discussing.
Rarely, and it is worth being checked, particularly if you have bleeding between periods or after sex, or pelvic pain with fever.
No, and washes and douches usually make it worse by disrupting the normal bacterial balance. Plain water externally is enough.
It is suggestive rather than diagnostic. Grey with a fishy smell suggests BV, thick white with itching suggests thrush, yellow green and frothy suggests trichomoniasis, but these overlap enough that testing is what settles it.
Most likely because it was not thrush. BV and trichomoniasis produce similar symptoms and need entirely different treatment.
The next day.
It can be, and it often is not. Thrush and BV are not STIs. Trichomoniasis, chlamydia and gonorrhoea are. Testing distinguishes them.
The evidence is weak. They are unlikely to harm, and unlikely to be the answer for recurrent thrush.
Recurrent symptoms deserve investigation rather than another identical course. There are longer term approaches for recurrent thrush and BV, and sometimes an underlying factor to address.
Tell us. Some causes matter more in pregnancy, and some treatments are avoided.
Book a confidential appointment at your nearest clinic. Examination, the right swabs, next day results, and treatment matched to the actual cause.