Both men and women need to look after their sexual health and take time to understand the issues that surround contraception and sexually transmitted infections (STIs).
For instance there are some STIs, like chlamydia, that you could be carrying without having any symptoms. This infection can affect fertility, so it's important to make use of the sexual health services available for free on the NHS.
Sex & Young People
A comprehensive guide to the questions you may have about sex from the NHS
Sexually Transmitted Infections
Issues, symptoms and treatments
Sexual Health FAQs
Expert answers from a qualified Doctor
Here you'll find tips for a fulfilling sex life plus advice on STDs, contraception and common sex problems.
Chlamydia is the most commonly diagnosed sexually transmitted infection among under-25s. Often there are no symptoms, but testing and treatment are simple.
Causes and risk factors Chlamydia is usually passed from one person to another during vaginal, oral or anal sex, or by sharing sex toys. It can live inside cells of the cervix, urethra, rectum and sometimes in the throat and eyes.
NHS Choices - focus on Chlamydia
Information, videos and advice from the NHS website
This factsheet is for people who have chlamydia, or who would like information about it.