If you have had sex without using contraception (unprotected sex) or think your contraceptive method may have failed, a nurse or doctor can fit an emergency Intra-Uterine Device (IUD), also know as the 'coil', in your womb up to 5 days after you had unprotected sex.
An IUD is a small plastic and copper device which stops sperm meeting an egg or stops an egg settling in the womb. The IUD will prevent 98% of pregnancies expected to occur if no emergency contraception had been used.