According to Public Health laboratory Service figures it is estimated that one in ten under 25 year olds now have the infection.
If you are over 25 and have had two partners within a year, or recently changed partners your risk increases.
If you think you have been at risk you can either talk to your GP and ask specifically for a test, or you can contact a sexual health clinic. These are also known as Genito-Urinary Medicine (GU) clinics, and are usually found at a large hospital. The clinics are free and confidential. Anyone can go; your doctor does not need to refer you.
You can find your nearest one in the phone book. Or by calling:
NHS Direct 0845 4647.
Sexual health help-line is available seven days a week 24 hours a day
Call: 0800 567 123