Yutin, or levonorgestrel, is a highly effective progestin. After taking levonorgestrel, levonorgestrel acts on the uterine lining, which will cause the endometrium to retreat and bleed, and have a period, which is a normal vaginal bleeding, there is no need to be too nervous, but if the amount of menstruation is more than the normal amount of menstruation, it is necessary to go to the hospital as soon as possible to consult the doctor for examination; if there is not much vaginal bleeding, there is no difference between the amount of normal menstruation, there is no need to deal with special treatment. Pay attention to the cleanliness and hygiene of the vulva, prohibit the consumption of spicy and stimulating food, pay attention to rest, avoid strenuous exercise. If your period is delayed after taking Yutin, you should be alert to the possibility of unwanted pregnancy and go to the hospital as soon as possible to have your blood HCG value checked.