I have had troubles for two years now (burning after sex etc.), and it seems as though my partner kept giving it back to me. I was fine until we were intimate. He had yeast problems (and didn't know it until I kept having problems after sex!) but he now blow-dries his penis after showering and this has seems to help us dramatically (he is not circumcised so the yeasties seem to hang out on him). Have you tried this?