Reproductive Anatomy and Physiology of Cattle Mucus: Phlegm, Causes, Colors & How To Get Rid Of It A Guide to Understanding Natural Vaginal Lubrication O Positiv Vaginal discharge is a natural process where the cervix produces mucus to clean and protect the vagina, changing in consistency throughout the menstrual cycle. Its texture, color, and amount vary depending A porous cervical mucus plug leads to preterm birth induced by experimental vaginal infection in mice: iScience