The object of birth control is to prevent pregnancy. Some methods, like the pill or sterilisation, are virtually 100% effective. Other methods are less so.

Using these less reliable methods on their own, without the pill, is advisable only if you are in a stable relationship where if pregnancy occurs, you are confident that you can cope with the realities of parenthood.

Different methods may appeal to you more, or be more appropriate at different stages in your reproductive years. The four most important factors are:

Your age

Your sexual activity profile

Your medical history

Your current relationship