Levonorgestrel
"Single mom in my 30's not on the pill and wasnt really sexually active.  My cycle usually comes around the same time every month give or take a day around the 30th. Had a crazy night on the 28th and took the pill the next morning. Was dizzy and felt sick to my stomach (could have been hung over) Didnt have much of an appetite for a good week which could have been cause by stressing about my cycle. It did delay my cycle for about a week, was super bloated and cramps more than normal..I was totally freaking out because i didnt see any reviews close to my situation BUT IT WORKS!!! #lessonlearned"