Levonorgestrel
"My boyfriend and I had protected sex just yesterday (Friday, January 29, 2016). He used a condom--as usual. But, this time, unfortunately, the condom came off--either while he was still penetrated or after he pulled out. This scared us both so much, because there's a very high chance that semen could had entered my vaginal tract and went further into my reproductive system. He didn't want to take the risk, so he decided for us to immediately go to out and buy Plan B One Step. I took the pill, with not water, but Canada Dry ginger ale, about one hour after we had sex. I waited two hours to expect symptoms, and still haven't experienced any, except for fatigue. It's been about 12 hours now today. I'm wondering if I'm going to have symptoms"