I will say this once but there is a simple 2 step plan to limiting the damage which is yet to come.
1) go the fuck home
2) stay the fuck home
remember I said this in 2 weeks
Do you find lighter patches in your dark underwear? IT'S NORMAL! Your vagina is acidic and has a pH of 3.8-4.5. That's acidic enough to bleach fabric, and that's what's happening.