Symptoms of non-ovulation, such as the presence of follicles on ultrasound monitoring but no pregnancy after intercourse, i.e. no valid egg is discharged. Some people have stretched leucorrhea when ovulating, if they are not ovulating they may not have the above symptoms. Other people who are very sensitive during ovulation will feel a little pain in their stomach, which is sometimes a sign that they have ovulated. When ultrasound reveals a relatively large follicle, but keep using ovulation test strips to monitor it, but no result is detected. In some patients, no two-way body temperature is detected, which is also a sign of no ovulation. In these cases, it is necessary to go to the hospital as soon as possible to see a specialist for the corresponding examination to find out the causes and give corresponding treatment so that ovulation can be successful and pregnancy can be achieved as soon as possible.