A course of treatment is 7 days, so it is best to use the pessary for 7 days. It is recommended to consolidate the treatment for a few more days and stop using the medication after the clinical symptoms have completely disappeared, and to go to the hospital for a review about 3-7 days after stopping the medication, mainly to find out whether the pathogenic bacteria have changed to (-). If the pathogen has not changed to (-), it is necessary to continue to give medication even though the clinical symptoms have disappeared. In addition, for pathogenic infections such as Candida and Trichomonas, these infections need to be cured clinically only if the test is (-) for 3 times in a row, so if there is a (+) result in one test, it is necessary to continue to give medication for treatment.