Ok im getting a new boyfriend tomorrow and he is alittle shorter then me and well i wash frequently in between my legs but when i get to school my vagina i think sweats and then starts to give off this oudor and i know i dont have an infection and brown stuff is in my underwear and its not from my period i do sports? and when i went to pee it stung off and on is this anyway to stop it or tell me what the problem is? without going to doctor or buying anything