how late can plan b make your period

Plan B can make your period late by about a week or sometimes more due to the hormonal changes it causes. Typically, most people get their period within about a week before or after the expected time after taking Plan B. If your period is more than one week late, it is recommended to take a pregnancy test to rule out pregnancy. Plan B works by delaying ovulation and altering hormone levels, which can temporarily disrupt your menstrual cycle and affect the timing, flow, and duration of your next period. The period after taking Plan B might be earlier, later, heavier, or lighter than usual depending on where you are in your cycle when you took it.