Days before the appointment don't eat any dairy, meat, beans or Sugar (sodas, cakes etc). Any meat needs 3 days to be digested, and during this time it putrifies inside of you. If you are constipated do a coffee enema, it will clean your colon and your liver. Clean colon, clean breath. Drink a lot of water. Peppermint tea or green tea is good for controling bb.