Okay so what would happen if you took a emergency contraceptive like Plan B or Aftera...if you weren't pregnant in the first place? Like you thought you were so you took it? My friend said she was completely fine and nothing happened...no side effects or nothing. Would it still affect her cycle? The thing there was like literally no way she wouldve gotten pregnant in the first place. She was protected during sex...wasnt ovulating or anything so..what would happen?