Levonorgestrel
"So I'm here like many of you to sing the praises of this product. I'm 32 5'9" and a good 270. Me and my boyfriend got a bit carried away for our first time together and long story short no protection was used. I was super freaked out as I didn't want to have a baby with a guy I haven't been with six months yet. When I got home and looked at my period tracker I realized that I was smack in the middle of my high fertility time. I got to Walgreen's and took this pill within 12 hours of intercourse (and after a long sleepless night worrying). I didn't have the worst side effects but I did have cramps, nausea, extreme breast tenderness and major bloating and fatigue for a week or so. I'm having a period right now so I'm happy!"