Ah thrush sux doesn't it I've posted in a few threads about this and Kelly one of the mods seems to be pro at it also
You need to get on a good probiotic (something even better than inner health plus) and on some minerals that contain all the alkalie 'greens'... its seems inliven is the thing on belly belly or I'm taking something called green qi. then cut out sugar of your diet as the candida bacteria feeds of sugar and thats how it multiplies. I've been sticking to things that are 1.5g or less of sugar and no fake sugar (ie. in coke zero) cuz its worse than real sugar.
also get rid of wheat (so gluten free stuff) and yeast. and as someone else suggested, google alkali foods and start eating those kind of things. Take it from someone who has suffered thrush constantly for over 13 years (and i'm only 22) that this diet is hard... i've tried it a few times and even now i just sit and cry from wanting sugar so bad lol... however after doing this again for 4 weeks i can see results and its slowly dying.