If yellowish-green discharge occurs during pregnancy, accompanied by odor, it may be caused by trichomonas vaginitis, bacterial vaginitis and pelvic inflammatory disease. Gynecological inflammation during pregnancy is easy to cause miscarriage or premature birth, the fetus after birth is also prone to skin diseases, so you need to be under the guidance of a physician, the application of medication. 1, trichomonas vaginitis: the initial treatment can be oral metronidazole, but also in the bedtime wash the vulva after the nifurtimox mycobacteria vaginal suppositories into the vagina. Pregnant women in the treatment of trichomonas vaginitis at the same time, the husband should also receive treatment, should avoid sexual intercourse before the cure. During the treatment period, the vulva should be kept clean, washed 1-2 times a day, underwear, towels, etc. should be boiled and disinfected for at least 15 minutes, and exposed to the sun in order to destroy the pathogens; 2, bacterial vaginitis: bacterial vaginitis in serious condition, there can also be yellow-green secretion, can be used to clindamycin vaginal cream coated in the vagina for local treatment, in the process of the treatment prohibit sexual intercourse, to maintain vulvar cleansing 3.Pelvic inflammatory disease: Pelvic inflammatory disease during pregnancy can also appear yellow-green discharge, accompanied by odor, need to be under the guidance of the doctor to choose, the fetus does not affect the antibiotic oral treatment.