I'd like to add, to all of the good suggestions above, that you sleep with no underwear on. Airing is good either way,Yeast or BB. I also think us girls can have several problems going on at the same time, from personal experience One place the guys have a jump on us is that their male parts are not as close together as ours are.
I've had the but crack one and calmoseptine works there for me. I also sleep on a protective pad so don't worry about staining my sheets.