Infertility may occur if a woman has the following symptoms: 1. Irregular menstrual cycle, dripping menstruation or dysmenorrhea may lead to infertility. 2. Low menstrual flow or heavy menstrual flow may also lead to infertility. 2. Recurrent lower abdominal pain and increased vaginal discharge may also lead to infertility. 3. The absence of menstruation is likely to be caused by malformation of the uterus or congenital absence of the uterus. Once a woman has the above symptoms, it is recommended to go to the hospital to give the appropriate examination and active treatment, which will lead to regular menstruation, disappearance of inflammation and good treatment.