Levonorgestrel tablets belong to the emergency contraceptive drugs, after oral intake of some women in 7-10 days or so will appear retreating bleeding, the amount of bleeding will be similar to the amount of the 4th-5th day of menstruation, will subside in 7 days or so, and a very small number of women will appear to be bleeding continuously. When there is constant bleeding, hormone tests and ultrasound are needed, and depending on the situation, anti-inflammatory and hemostatic medications may be taken orally, or even oral medications may be taken to help stop the bleeding. Not all women who take levonorgestrel tablets will have an adverse reaction and cause bleeding, there will be some women who will not have bleeding after taking the tablets, which is considered normal, and not all women will be affected by the adverse reaction of the drug. Must be patient to wait for their period, because some women after oral medication, there will be menstruation when the amount of change, so this time must also be observed. When there is a prolonged delay, it is important to rule out whether you are pregnant or not, as it is not 100% contraceptive.