Question: what does it mean when you have white spots in your panties?
Answer: Why are there 'bleached' patches in your underwear? The vagina's discharge – which is a normal, healthy thing, by the way – is naturally acidic, which can leave white or yellow stains on your underwear's crotch region. Your vaginal discharge's pH level is on the naturally acidic side, varying between 3.5 and 7.