Just an overdose of bacterial healing odorless white fluids (discolored or with odor may be an STd) your body overproduces when fighting an intruding uninvited germ, bacteria, non bacterial substances like tampons, condoms, lubricants even a new detergent on your undergarments. Though normal most do need to be treated with over the counter meds or prescription.
It's a common form of fungal infection that appears anywhere from the mouth to the genitals to the toenails. Any clinic or GP can provide anti fungal medication for treatment such as fluconazole or nystatin. It's pretty easily taken care of.