"i never write reviews on anything, but due to the fact that i was freaking out i know most girls are on the same boat i was. i looked everywhere just to read that it actually works and let me you, it works!!! as long as it is taken as the direction say. i has unprotected sex on dec 28 and and within an hour or hour and a half i was taking plan b. i did not have side effects after taking the pill, i was actually worried that it was having no effect on me because i felt absolutely nothing. i&#039;m usually never the kind to get bad cramps when menstruating either way. my period was due on jan 2 but instead i got it a day earlier. please have patience, let the pill do what it does and you&#039;ll be fine."