You don't need to have a lot of sexual partners to get a sexually transmitted infection (STI). Sex just once with someone who has an infection can be enough.

What is a sexually transmitted infection?

Some infections can pass to another person through unprotected vaginal, anal or oral sex 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 and help prevent or delay the development of complications. 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 or lower abdomen.

Even if you don’t have any signs and/or symptoms you may wish to seek advice or have a check-up, particularly if:

• you have had unprotected sex with a new partner recently
• you or your sexual partner have sex with other people without using a condom
• your 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, rectum (back passage) 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 womb).
• 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 get information about sexually transmitted infections from fpa.

What other services do GUM and sexual health clinics provide?

In addition to tests and treatments for sexually transmitted infections, there may be other services available, such as:

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

How can I protect myself against sexually transmitted infections?

The following measures can help protect 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, or the male or female anus, with a latex square (dam).
• If you are not sure how to use condoms correctly contact fpa or see our leaflet 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.