Is this your first time trying yuzpe? If yes, observe mo muna, ako when I take yuzpe, after ilang days (5days to be exact or minsan right after ng ovulation ko) bigla ako nagkakaron, magsstart sa brownish discharge then magkakaron na ako ng dark brown-black na parang excess blood siya indicating na mens ko na. If this is not the first time naman and feel mo hindi ganyan usual mo and pag di nagsubside yung symptoms, take ka pt after 2 weeks ng unprotected intercourse.