MIni pills that contain progesterone alone are the drugs that can be used for delaying the menstruation and effective for contracption also.. You can use the medications adjusting the dosage for both the effects after discussing with your doctors.. Alternatively, once you have fininshed the coures of medications for delaying the menstruation, you may use the emergency pills for contraception.. Discuss with your doctor to know the dosage and frequency of these medications...