It should really be called 'the postcoital pill' or 'PCP' - because it's not just for morning-after use. In fact you can take it any time up to 72 hours after unprotected sex,
progestogen-only PCP (Levonelle-2 or Levonelle) is less likely to cause nausea although it may give women
breast tenderness, headaches, dizziness and tiredness.