Vaginal Dryness: Causes and Moisturizing Treatments Cervical Mucus and its Relationship to Ovulation: Premom Distinguishing Between Vaginal Discharge, Arousal Fluid, & Cervical Mucus The Bartholin's gland is located at the entrance to the vagina, and it secretes mucus, providing vulval and vaginal lubrication. A Bartholin's cyst occurs when the gland becomes blocked, and this can Mucus Plug: What It Means & What It Looks Like Understanding the Importance of Cervical Mucus in Conception