Generally, the sooner you take the morning after pill after unprotected sex, the better. All morning after pills have different time limits, with most being up to 72 hours. Only ellaOne has a longer limit of five days having had unprotected sex.
If more than five days has passed since you had unprotected sex, then the morning after pill won’t work. In these circumstances, there are other options to consider, such as having an IUD (intrauterine device) fitted to stop ovulation. [popover id=ref3]