This involves touching or stimulating your genitals or someone else's for the aim of sexual pleasure. Masturbation is natural and it is normal to want to explore your own body. This is also called wanking or 'solo' sex.

This is the scientific term for when a girl, or someone with a female reproductive system has their period. A period is the shedding of the uterus lining every month if an egg is not fertilised by sperm. 

Also known as the progestogen-only pill, it prevents pregnancy by changing mucus in the vagina so any sperm can't reach the egg. See our Contraception page for more information.

Men who love men, men who have sex with men

Having a sexual or romantic relationship with one person at a time.

When people are masturbating at the same time as a form of sexual activity.

This is an infection caught through unprotected sex. If it is left untreated it can cause pelvic inflammatory disease.