Menstruation will occur about 7 days after stopping progesterone for failed embryo transfer. Progesterone injection is needed after embryo transfer to help the fertilized egg to settle smoothly, and the routine injection time is 2 weeks. However, if the fertilized egg does not become viable, the injection will be stopped and the endometrium will experience withdrawal bleeding about 1 week thereafter, which means the first menstruation will occur. Women need to put their moods at ease and do not need to be overly nervous and worried, as too much anxiety can also have an effect on the menstrual cycle. Generally, after 2 normal menstrual cycles after one embryo transfer, the next embryo transfer can be performed. During this period, it is recommended to pay attention to rest, avoid straining and forbid having intercourse during menstruation to avoid infection and damage to the environment of the uterine cavity. In addition, it is important to pay attention to the reasonable arrangement of work and life in daily life, to avoid excessive stress, to eat a light diet and to avoid spicy and stimulating foods, so as to create better conditions for embryo transfer.