I read your post and thought that i would let you know what helped me with my BB, here goes:-
In the morning I cut a fresh lemon in half, sqeeze it into a cup and drink it straight, swishing with water afterwards (you may need to use baking soda afterwards, but i dont oops)this helps me loads.
I also swiched my mouthwash to a natural aloe vera one instead of a normal minty one.
I take peppermint and parsley capsules
And, i also had the stuff in my throat all the time, for this i bought a neti pot, incase you dont knoe what this is it is like a little pot with a nozzle, you fill with saline water and pour it up one nostril at a time allowing the water to come out of the other nostril, i also let some of the water go down behind my nose. This really helped with the gunk loads, it also clears the sinuses.
Apart from this i took threelac for candida and it seemed to clear it from my sinuses. I no longer have the gunk, but i still get the bad taste sometimes. not as bad as it used to be though.
I also did alot of cleansing, which i am still doing, really helps also. Take cayenne to get rid of the mucus and try to avoid dairy as it causes more mucus.
I hope that this helps you in some way, i know what it is like to be in your situation.