also, im not sure if someone else has said this yet, but you can get a yeast infection from being on antibiotics also. and when i got one my doc said that women my age (early 20s) can get them for pretty much no reason at all. and my boyfriend said that some of his previous partners had gotten them soon after they started having sex because their bodies werent conditioned to his bodie's bacteria yet? Im not sure how true that is but he said he has had girlfriends get yeast infections right after they got together and thats what theyre doctor told them.