 [ Symptoms ] had sex fri morning and got plan b that afternoon sunday had unprotected sex again do i need another pill [ Disease ] if you keep having unprotected sex over and over again what you really need to a better form of birth control plan b is for emergency contraception yes you can choose to take it again but i do not know anything about your medical history to know if there is a specific reason why this would be problematic plan on an unusual menstrual cycle this month you need plan a a daily form of birth control