If the vaginal discharge after pregnancy is light green in color, this condition is considered to be a sign of vaginitis. If you have trichomonas vaginitis, the leukorrhea will be light green in color and have a bad smell. But only one symptom is not accurate, it is best to do a routine examination of the leukorrhea, to determine the condition, and then use the right medicine, so as to be able to achieve a good therapeutic effect. If you are sure about trichomonas vaginitis, you can use the Red Kernel Wash, or Gynecological Thousand Gold Wash to clean the vagina. This kind of drug is a Chinese medicine preparation, the effect on the fetus is very small, after cleaning can be in the vagina on the metronidazole suppository treatment. If you have vaginitis during pregnancy, it is not recommended to use oral medication, because oral medication can be directly absorbed and affect the health of the fetus. Topical medications do not cross the placental barrier, so they will not affect the health of the fetus.