Plan B is an AMAZING drug - within 72 hours after accidental or unplanned or *god-forbid* forced unprotected sex, you can take Plan B high level birth control pills to prevent pregnancy. This is amazing. This is genius. This is smart. This is also the worst friggin hormonal melt-down I have EVER experienced. When I found myself irately screaming with zero self-control at my boyfriend, I thought, "What the hell wrong here?" Don't get me wrong, we've had fights before. This time, I felt like I had zero control over my emotions and body. It was atrocious. I had to unfortunately take it again 3 weeks later - thank you LifeStyles Ultra Thin - and when the beast roared its ugly head again, I was prepared and knew what to expect. I don't know if every woman has this reaction, but as a woman who doesn't use hormonal birth control, I was knocked on my rear.