Chlamydia is one of the most common sexually transmitted infections (STIs) in the UK, especially in people under 25. Although it is so widespread, a lot of people never notice any symptoms, so the infection can spread without anyone realising. Fortunately, treatment usually works well once you know you have it. In this guide, you’ll see how chlamydia spreads, which symptoms to watch for, how testing works, and what happens after a positive result.
What is chlamydia?
Chlamydia is a bacterial infection. People usually catch it through:
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vaginal, anal or oral sex without a condom
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sharing sex toys that you have not washed or covered with a new condom
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close genital contact where bodily fluids are exchanged
The infection can affect your genitals, throat, rectum and, less commonly, your eyes. Because so many people stay symptom-free, regular testing matters if you are sexually active, especially when you have new or multiple partners.
Chlamydia symptoms: what to look out for
A large number of people never notice any symptoms. When problems do appear, they can look like this:
In women and people with a womb:
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unusual vaginal discharge
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bleeding between periods or after sex
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pain when you pass urine
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lower tummy or pelvic pain
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pain or bleeding during or after sex
In men:
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discharge from the tip of the penis
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pain or burning when passing urine
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pain or swelling in the testicles
In anyone, depending on where the infection is:
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discomfort, pain or discharge from the rectum after anal sex
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sore throat after oral sex
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red, sore or sticky eyes if infected secretions reach the eye
Whenever you notice any of these changes – or a partner tells you they have chlamydia – arrange a test as soon as you can.
Why untreated chlamydia matters
Leaving chlamydia untreated can sometimes lead to serious problems, for example:
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pelvic inflammatory disease (PID) in women and people with a womb
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painful swelling of the testicles (epididymo-orchitis) in men
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joint problems such as reactive arthritis
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problems in pregnancy and infection in newborn babies
No one can predict who will develop complications and who will not. For that reason, early testing and treatment give you the best protection.
How to get tested for chlamydia
Testing is quick and straightforward. Depending on your situation, the clinic may ask for:
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a urine sample
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a self-taken vaginal swab
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a throat or rectal swab if needed
There are several ways to access testing:
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sexual health (GUM) clinics
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many GP surgeries
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some pharmacies, especially for under-25s
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NHS and local sexual-health websites that send home-testing kits
People under 25 often see chlamydia tests offered routinely through screening programmes. Whenever you are offered a test, it is worth accepting.
How chlamydia treatment works
Most cases respond to a short course of antibiotics prescribed by a clinician. To make sure treatment works properly:
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take the tablets exactly as your prescriber explains
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finish the full course, even when you start to feel better
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avoid all sexual contact until seven days after both you and your partner have completed treatment
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contact the clinic if you vomit tablets or miss doses
In many situations, a repeat test is recommended after a few months, particularly if you are under 25 or at higher risk of getting chlamydia again.
Telling partners and protecting each other
After a positive result, current and recent partners also need testing. Health professionals call this process partner notification or contact tracing.
You do not have to handle this on your own. Clinics can:
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provide messages you can send to partners
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contact partners anonymously on your behalf
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help you plan what to say if the conversation feels difficult
Until partners have had their own assessment and treatment plan, it is safest to avoid sex with them.
How to reduce your risk of chlamydia and other STIs
There are several simple ways to lower your risk:
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use condoms for vaginal, anal and oral sex
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put a new condom on sex toys for each partner and wash toys between uses
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arrange regular STI checks if you have new or multiple partners
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talk about testing with new partners before you stop using condoms
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avoid sex when you or your partner have symptoms until a clinician has checked you
These steps, together with prompt testing and treatment, protect both you and the people close to you.
How Newgen Can Help
Newgen Pharmacy understands that sexual health worries feel personal. Our team offers confidential, judgement-free advice about chlamydia and other common STIs. We can explain how testing works, what your results mean and what a typical treatment plan involves.
Our pharmacists can also:
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help you understand antibiotic instructions when a clinician has prescribed them
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talk through partner notification and safer-sex strategies
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direct you to appropriate local or online services for testing and treatment
Book your consultation: https://newgenpharmacy.co.uk/
Questions? https://newgenpharmacy.co.uk/
Compliance note: We never promote prescription-only antibiotics publicly. A clinician only discusses potential treatment options with you privately after an appropriate assessment, if it is safe and suitable.
Author & Content Writer: Dr.Naeem Aslam