During pregnancy, the leucorrhea is yellowish-green in color, which is an abnormal sign. Normal leukorrhea is milky white or white and dilute, and does not change color. If the leucorrhea is yellowish green and thin, it is considered to be a sign of trichomoniasis. If the leukorrhea is thick and yellowish, it is considered to be mycosis fungoides. In this case, it is best to have a routine examination of the leukorrhea to determine the condition and to treat it with intravaginal medication in time. For vaginitis during pregnancy, topical vaginal medication is usually used, but oral medication is not recommended to avoid affecting the growth and development of the fetus in the womb.