uBiome (http://ubiome.com/ http://ubiome.com/) will sequence you microbiome for ~$100 - they support mouth, nose, gut & skin samples. If you're really intereste

uBiome (http://ubiome.com/ http://ubiome.com/) will sequence you microbiome for ~$100 - they support mouth, nose, gut & skin samples. If you're really interested, you could do one sample before, one after and get them both sequenced and compare the two.