Levonorgestrel
"Okay so the incident happened on April 6th around 1 p.m (I was also on ovulation). The next day (April 7th) around 11 a.m. I took the pill. About a week later (April 13th) I started spotting, it was very light at first then it gradually got heavier, it was like a light period and it stopped on April 18th. I was so worried because my actual period was due April 24t, I miss it so I waited and waited and was going to test but I was too nervous to do it because I wasn't ready for a child yet. So I waited more and finally my period came on May 17th along with strong cramps.

My advice for the ladies that have taken this pill, don't stress, it will delay your period even longer."