There are the following reasons for the symptoms of blood clots in women’s menstruation: 1. If women usually have normal menstruation and suddenly have large menstrual flow and blood clots, it may be due to overexertion or excessive emotional excitement during menstruation, such as excessive sadness causing stagnation of blood and blood stasis, so you need to pay attention to rest and keep your abdomen warm, you can drink brown sugar and motherwort water to relieve. 2. If the endocrine disorder causes menstrual disorders, if the menstruation does not come for several months, excessive thickening of the endometrium may also result in heavy menstruation and blood clots.