Generally speaking, the bleeding volume increases from the second to the third day of menstruation, and the clots accompanying menstrual blood are mainly shed endometrium. Therefore, as long as there is no obvious and severe abdominal pain and other discomfort different from the previous ones, a high volume with clots on the third day of menstruation is usually a normal condition. However, if there are symptoms that are different from those of the past, such as heavy bleeding and abnormal clot status, women are advised to seek medical attention in order to identify other diseases that may cause symptoms similar to those of menstruation. Women who suffer from diseases such as endometriosis or adenomyosis may experience increased menstrual flow, significant clots in the menstrual flow, and symptoms such as prolonged menstruation and increased dysmenorrhea. In this case, women are advised to consult a doctor and under the guidance of a professional physician to perform medication or, in severe cases, surgery. If a woman has a history of menopause for 6-8 weeks before her period, and this period is accompanied by severe abdominal pain, it may be due to ectopic pregnancy. The embryo is attached to the cervical area and if it invades the cervical vessels, there may be a larger amount of bleeding and discharge of blood clots. Women are advised to seek immediate medical attention and choose a reasonable treatment plan under the guidance of a doctor to avoid delaying the condition and causing more serious hemorrhagic shock. During menstruation, women should pay attention to rest, refrain from strenuous exercise, keep warm, and avoid spicy, stimulating and cold foods so as to relieve menstrual discomfort.