Although metronidazole is prohibited during pregnancy, patients who have bacterial vaginitis after pregnancy can sometimes use metronidazole vaginal tablets. Therefore, if patients are afraid of problems after using metronidazole, they should not get pregnant that month and can get pregnant after having a period. Because the metabolic cycle of metronidazole is not that long, women can rest assured that taking metronidazole after having a period will not cause any effects. However, it is important to pay attention to exercise before getting pregnant. Patients taking metronidazole must have inflammation, which should be more likely to be bacterial vaginal inflammation, and after pregnancy, the patient’s body resistance is lower and more likely to suffer from inflammation, so it is important to pay attention to exercise and strengthen the body to be able to reduce pregnancy or inflammation recurrence after pregnancy.