STIs are sexual transmitted infections.

The easiest and most effective way to protect yourself and others from STIs is using a condom.

Anyone who has sex can be infected with an STI. They can be passed on during intimate physical contact, including oral sex, sexual intercourse and anal sex.

You can become infected on your first experience.

Most conditions vary in their symptoms. In fact, in lots of cases you may have no symptoms at all.

You should visit your doctor or local clinic if you experience:

  • Itching
  • Swelling
  • Redness around your vagina or penis
  • Pain when you pee
  • Pain during sex
  • Unusual discharge from your vagina or penis
  • Pains in your lower abdomen

If you're between 16 and 24 and live in Hertfordshire you can order a free chlamydia test. Find out more at

Do you have symptoms or want to be tested?

If you have symptoms you should get yourself tested to avoid infection developing and from transferring it to someone else.

Call 0300 008 5522 to book an appointment at one of our clinics.

Find your nearest clinic