This is embarrassing, but everytime I wear underwear I stain my panties. It's not a blood stain or anything. It actually looks like somebody spilled bleach on the area. What is it and what should I do about it?
I experience the same thing, did you ever find a solution?
It sounds like a discharge...whether it's a normal discharge or a discharge from a std I don't know, either email me back more info about your discharge (as in smell and color) or go to your doctor and get checked out.
As for the staining, you could get panty liners to use.