One of the most common annoyances pregnant women deal with is vaginal discharge, medically known as leucorrhea, which often causes discomfort if expelled in great amounts. Most of the time, the discharge is normal and indicates that the pregnancy is going well. However, if you experience yellowish green discharge during pregnancy, you may have an infection that requires immediate medical attention to prevent potential complications that may arise. Green discharge during pregnancy is never a good thing – it indicates that something’s wrong down there and that your baby might be threatened. Yellowish green vaginal mucus occurs as a consequence of vaginal infection, most commonly bacterial vaginosis or trichomoniasis. If you have recently engaged in unprotected sex, there is a good chance that you have contracted a sexually transmitted disease like gonorrhea or Chlamydia. In addition to these, another possible cause of green discharge may be an infection with the Human Papillomavirus (or HPV). If you have recently used tampons or scented panty liners to absorb excessive discharge, this might have caused the bacterial flora of your vagina to change and upset the balance between good and bad bacteria.