Emergency contraception Emergency contraceptives pills (ECPs) are described as drugs that work by either inhibiting or delaying ovulation without affecting implantation. Hormonal contraceptives are available as pills (oral contraceptives), injections, implants, intrauterine devices, patches, and vaginal rings In what situations can emergency contraception be used? When no contraceptive has been used. Sexual assault when the woman was not protected by an effective contraceptive method. When there is concern of possible contraceptive failure, from improper or incorrect use, such as: EC pills are not meant to be used as a regular form of contraception and should not replace the use of regular contraceptive methods. Additionally, EC does not prevent against HIV or other sexually transmitted infections. condom breakage, slippage, or incorrect use; 3 or more consecutively missed combined oral contraceptive pills or 3 days late during the first week of the cycle; more than 3 hours...