There are three methods of emergency contraception and they can be used up to varying time limits after unprotected sex.

The two emergency hormonal pills that are available are Levonelle, which can be taken up to three days after unprotected sex, and ellaOne, which can be taken up to five days after unprotected sex. Both are available from your pharmacy without prescription – ask your pharmacist.

A third option is an emergency intrauterine device (IUD), sometimes called the coil, which can be fitted up to five days after unprotected sex and can then be left to act as a regular method of contraception for five to 10 years, depending on the type.

A recent Family Planning Association survey found that more than one-quarter (29%) of sexually active women aged 16 to 54 have had unprotected sex in the last two years and did not use emergency contraception, despite saying they were not planning a pregnancy.

Is it worth the risk?