Apr 24, - What else can cause light pink vaginal discharge? of the ovary rupture and release an egg when sticky, milky-white discharge occurs. Infections with yeast, bacteria, or parasites could be responsible. A standard yeast infection usually causes a whitish discharge with some itching in the area. Bacterial vaginosis (or BV for short) is an infection with a bacteria that can cause a smelly discharge with some irritation in the vulvar area.