" CLEAR AND WATERY DISCHARGE: It’s normal to see this type of discharge at any point during your cycle. You might even see a bit more of it when you’re being more active, like when you’re playing sports. DARK YELLOW OR GREEN DISCHARGE: This color discharge could mean you have a vaginal infection, so be sure to ask an adult to take you to the doctor. But don’t worry—most of these infections can be easily cleared up with some medicine. BROWN DISCHARGE: This is usually a sign that the vagina is cleaning itself and getting rid of some old blood that might not have been cleaned out during your period. "

― Sonya Renee Taylor , Celebrate Your Body (and Its Changes, Too!): The Ultimate Puberty Book for Girls