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.
To find out more, visit the NHS Choices website for articles, videos and information on sexual health. You can take a short quiz to see if your sex life is putting your health at risk, and you can find services and clinics in your area (in England) including contraceptives, emergency contraception and infection testing.
The NHS Direct website answers common sexual health questions on issues from contraception and smear tests to STIs and sex therapy.
You can also talk to your doctor or nurse at your GP surgery or family planning clinic. Surgeries often hold family planning sessions or clinics for young people - both are aimed at creating an atmosphere where people can talk openly about sex and relationship issues.