
Sexually transmitted infections (STIs) are any kind of bacterial or viral infection that can be passed on through unprotected sexual contact. They can have a number of signs and symptoms, however, some STIs have no symptoms, and if left untreated can lead to infertility.
If you are worried that you might have a STI, you can get free advice and testing from Brook clinics, sexual health services (or GUM clinics), young people’s services, your GP or free online STI kits.
Contraception and sexual...
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