yeast infections can spread, but i also get the exact same thing you are talking about, a red rash when i wear maxi pads it i expecially get it around my butt hole area as gross as it sounds, and it usually lingered because me walking chafted the already irritated area i usually haft to put some petroleum jelly there and sleep in the buff for it to go away, my doc says its becsue my skin is sensitive to the pads and they rub that area when i wear and pad , i only use pads so i wear them for 5 days i tried several kinds to find one that was not as bad. always thin regular seem to be ok. hope this helps, and everything is ok