During threatened miscarriage, proactive treatment to preserve the pregnancy is required. However, the duration of such treatment varies from person to person and should be based on the specific circumstances of the patient. If the patient has a history of recurrent miscarriages, in the event of a threatened miscarriage, the pregnancy should be preserved for a longer period, at least until three months into the pregnancy when the fetal development has stabilized. However, if the patient experiences light vaginal bleeding without abdominal pain, and the condition is relatively mild, approximately a week of medication may be sufficient for improvement. It is recommended that one to two weeks after the bleeding stops, a visit to the hospital should be made to perform an abdominal ultrasound to check the embryo's growth.