For women who have been clean for half a month without ovulation, if their menstrual cycle is 40 days or more, it is normal; if their menstrual cycle is about 30 days, it is considered abnormal. Ovulation usually occurs about 14 days before the next menstrual period, if a woman has a cycle of about 40 days since the first menstrual period, half a month after the menstrual period is generally in the menstrual cycle of about 20 days, so it is normal not to see ovulation at this time. For women with a menstrual cycle of 30 days or so, it is considered abnormal, and is mostly considered to be related to abnormal ovarian function, which in turn affects hormone levels in the body, leading to irregular ovulation or no ovulation. For women who have been clean for half a month without ovulation, it is recommended that they go to the gynecology department of a regular hospital to improve ultrasound, sex hormones and other relevant examinations, and to clarify the cause of the disease and then actively treat it under the guidance of the doctor.