How do you get an STI?
Common Symptoms of an STI
About one in ten people will not experience symptoms of an STI. Which is why it’s so important to get tested regularly at least once a year or once every three months if you’ve more casual sexual partners. But if you experience these symptoms anywhere from a couple of days to several weeks after unprotected sex – it might be an STI, so you should get tested.
- Painful lower stomach
- Pain or burning sensation when peeing
- Peeing more often than usual
- Discharge from vagina, penis or anus
- Cold or flu symptoms

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Clear, Accurate Information
Discover more about each conditions symptoms, treatment, prevention and support.
Gonorrhoea
Gonorrhoea is a common bacterial sexually transmitted infection (STI) that can affect anyone who is sexually active. It often causes no symptoms, making regular testing an important part of protecting your sexual health.
Chlamydia
Chlamydia is one of the most common sexually transmitted infections (STIs) and is easily treated with antibiotics. Many people experience no symptoms, so regular testing is the best way to detect and treat the infection early.
Genital Herpes
Genital herpes is a common viral sexually transmitted infection (STI) caused by the herpes simplex virus (HSV). While there is currently no cure, symptoms can usually be managed effectively with treatment and self-care.
Syphilis
Syphilis is a bacterial sexually transmitted infection (STI) that develops in stages and can become serious if left untreated. Early diagnosis and treatment are highly effective, making regular testing especially important.
Pubic Lice (Crabs)
Pubic lice, also known as crabs, are tiny insects that live in coarse body hair and are usually spread through close physical or sexual contact. Although they can be uncomfortable, they are easily treated with the correct medication.
Scabies
Scabies is a skin condition caused by tiny mites that burrow beneath the skin, resulting in intense itching and irritation. It spreads through close physical contact and can be effectively treated with prescribed medication.
Balanitis
Balanitis is inflammation of the head of the penis that can cause soreness, redness and irritation. It is often easily treated once the underlying cause has been identified.
Cystitis
Cystitis is an inflammation of the bladder that commonly causes pain or discomfort when urinating and a frequent urge to pass urine. While it isn’t usually a sexually transmitted infection, its symptoms can sometimes be confused with those of an STI.
Non-Specific Urethritis (NSU)
Non-Specific Urethritis (NSU) is inflammation of the urethra that isn’t caused by gonorrhoea. It can result from a variety of infections or irritants and is usually treated with antibiotics.
Proctitis
Proctitis is inflammation of the lining of the rectum, which can cause discomfort, pain and changes in bowel habits. It can have a number of causes, including sexually transmitted infections, and should be assessed by a healthcare professional.
Thrush
Thrush is a common yeast infection that can affect people of all genders, causing itching, soreness and irritation. Although it is not classed as a sexually transmitted infection, it can sometimes be triggered or passed on during sexual activity.
Hepatitis A, B & C
Hepatitis A, B and C are viral infections that affect the liver, but each is spread in different ways and requires different treatment or prevention. Understanding the differences can help you protect yourself and know when to seek testing or vaccination.
Shigella
Shigella is a bacterial infection that affects the digestive system and can be passed on through certain sexual activities, particularly those involving oral and anal contact. Good hygiene and early treatment can help prevent it spreading to others.
MPOX
MPOX is a viral infection that can spread through close physical contact, including intimate or sexual contact. Most people recover fully, but recognising symptoms early and accessing appropriate care can help prevent further transmission.
Consent
Consent is asking for permission from your partner before you engage in any sexual activity or when changing sexual positions.
Sextortion
Sextortion is a form of blackmail where someone threatens to share intimate images of you online or offline unless you give in to their demands such as money, more intimate images or sexual favours.


