please consider stopping the Antibiotics , obviously it is NOT a lasting cure, so why put your body thru the horror of Antibiotics (kidney damage, yeast overgrowth, liver congestion, dead friendly microbes) when they are not working?
I highly recommend that you get a good sinus irrigation tool. drugstores have them and there are several versions online. Flush the sinuses completely with warm, salted water, then bend over and let them drain - blow air thru your nose gently, while bent over.
Then disinfect your sinuses with a solution of colloidial silver. You can even get it as a sinus spray, or use a sinus spray bottle - empty out the pharm stuff and replace with CS.
Stop eating mucous-forming foods like milk, cheese, refined Sugar and flour, orange juice. Follow the guidelines for Increasing the Power of Digestion (see FAQ on this page).
After the parasite cleanse do some Liver Cleansing (see liver notes in FAQ), as the liver uses the sinuses as a path of elimination. So long as the liver is clogged, so too will your sinuses be clogged.
You also need to cleanse your lymphs. See the lymph cleansing post in the FAQ.
You may be a Kapha dosha, constant mucous is a Kapha disorder, so read up on how to balance the Kapha dosha as that kind of lifestyle/eating habits will help clear up the mucous too. More on that in the FAQ. :)