Find out more about these sexually transmitted infections (STIs)

Chlamydia

Genital herpes

Genital warts

Gonorrhoea

HIV

Non-specific urethritis

Pubic lice and scabies

Syphilis

Trichomonas vaginalis

Thrush and Bacterial vaginosis

Oral sex and sexually transmitted infections

You can get a sexually transmitted infection through oral sex. Find out about the risk of catching and passing on sexually transmitted infections through oral sex, how to get tested and treated if you think you have an infection, and how to protect yourself. Read our information on oral sex.

What is a sexually transmitted infection?

Some infections can pass to another person through unprotected vaginal, anal or oral sex, by genital contact and through sharing sex toys. Infections spread in this way are known as sexually transmitted infections.

Safer sex involves using condoms correctly every time you have sex. If you don’t use a condom you are more at risk of getting a sexually transmitted infection.

You don’t need to have lots of sexual partners to get an infection.

Can they be treated?

Most sexually transmitted infections can be treated and it is usually best if treatment is started as soon as possible.

Some infections, such as HIV, genital warts and genital herpes, never leave the body but there are drugs available that can reduce the symptoms. Drugs can also help prevent or delay the development of complications in HIV.

If left untreated, many sexually transmitted infections can be painful or uncomfortable, and can permanently damage your health and fertility, and can be passed on to someone else.

How will I know if I have an infection?

Not everyone who has a sexually transmitted infection has signs and/or symptoms. Sometimes these don’t appear for weeks or months and sometimes they go away, but you can still have the infection and pass it on to someone else.

If you experience any of the following you should seek advice:

• unusual discharge from the vagina
• discharge from the penis
• pain or burning when you pass urine
• itches, rashes, lumps or blisters around the genitals or anus
• pain and/or bleeding during sex
• bleeding between periods (including women who are using hormonal contraception)
• bleeding after sex
• pain in the testicles
• pain in the lower abdomen.

Even if you don’t have any signs and/or symptoms you may wish to seek advice if:

• you have had unprotected sex with a new partner recently
• you or a sexual partner have sex with other people without using a condom
• a sexual partner has any symptoms

• you are planning a pregnancy and may have been at risk of infection.

Where can I go if I am worried I might have an infection?

You can get all tests and treatments at a GUM or sexual health clinic. General practices, contraception clinics, young people’s services and some pharmacies may also provide testing for some infections. If they can’t provide what you need, they will be able to give you details of the nearest service that can.

All advice, information and tests are free, but if you go to a general practice you may have to pay a prescription charge for any treatment.

How will I be tested for sexually transmitted infections?

Tests for both men and women may include:

• an examination of your genitals, mouth, anus and skin to look for obvious signs of infection
• testing a sample of your urine
• having blood taken
• taking swabs from the urethra (tube where you urinate) and any sores or blisters
• taking swabs from the throat and the rectum. This is less common.

In women the tests might also include:

• taking swabs from the vagina and cervix (entrance to the uterus)

• having an internal examination.

What will I be tested for?

You will not automatically be tested for all infections. All tests are optional and should only be done with your permission. Sometimes you will get the results straightaway, and sometimes you will have to wait. The service will explain how you will get the results.

You can also contact FPA for information about sexually transmitted infections.

What other services do GUM and sexual health clinics provide?

Other services available may include:

• special sessions for people who have been sexually assaulted
• psychosexual counselling (to help with sexual problems)
• hepatitis B vaccination

• post-exposure prophylaxis (PEP) – a short course of anti-HIV drugs for people who may have recently come into contact with HIV.

How can I protect myself against sexually transmitted infections?

• Use male or female condoms every time you have vaginal or anal sex.
• If you have oral sex, cover the penis with a condom or the female genitals and male or female anus with a latex or polyurethane square.
• If you are not sure how to use condoms correctly contact FPA for more information or advice or see our booklet on condoms.
• Avoid sharing sex toys. If you do share them, wash them or cover them with a new condom before anyone else uses them.

This website can only give you basic information about sexually transmitted infections. The information in this website is based on evidence-based guidance produced by The British Association for Sexual Health and HIV (BASHH). Different people may give you different information and advice about certain points.

Remember – contact your doctor, practice nurse or a clinic if you are worried or unsure about anything.