When should the combined oral contraceptive pill (OCP) be started?
Ideally the combined OCP should be started during the first seven days of the menstrual cycle. When the oral contraceptive pill is started during this interval a back-up method of contraception is unnecessary provided that no combined OCPs are missed. The combined OCP can be started at any time in a woman who is sure that she is not pregnant and who has not recently given birth. Women starting the combined OCP after day seven of the menstrual cycle should use a back-up method of contraception during the first cycle of use.