Yuting belongs to 72-hour emergency contraception after the event, which has obvious effect, but it is usually not suitable as a conventional contraceptive, that is to say, it cannot be taken frequently. The advance or lag of menstrual period caused by using this medicine is a pharmacological reaction, so don't be too alarmed. But if there is no official holiday for a long time, I suggest you go to the hospital for a check-up. Early menstruation caused by short-term use like yours can be recovered by itself, so don't worry.

If there is a long-term contraceptive demand, it is best to take the daily contraceptive "Mafuron" produced by the Dutch company Organon, which has relatively stable efficacy, little side effects and a little slimming effect.