Hi Milli...So sorry for your chronic unresolved issues...my own experience has taught me not to badmouth docs but to realize that often...they just don't know. They're still learning in the ever-evolving field of medicine. My story: In 2010, I had one ovary removed due to a benign cyst. Thereafter, I developed a whole lot of new symptoms -- gastro distress, diarrhea, headache, fatigue, sinusitis. It took 2.5 years to have Clostridium difficule diagnosed. C. diff is an infection you can pick up in a hospital-like setting OR after rounds of antibiotics. It messes with your microbiome/gut flora, killing off good bacteria so the bad guys take over. I took Flagyl and my troublesome but not severe situation resolved. But my gut has never been the same. I have worsening chronic sinusitis. Six ENTs and two sinus surgeries later, still no definite causes. I researched online even more and discovered that scientists globally are considering the role of the microbiome in all kinds of illnesses. After all, the body is one interconnected system, not separate departments (lung, sinuses, gut, brain, etc.). Makes sense, right? So I'm experimenting (safely, of course) by taking a new probiotic with a lot of strains and also Gaviscon Advance (NOT regular Gaviscon; available from Europe via Amazon) in case acid reflux is involved. I've also signed up for some acupuncture sessions. My point: Be your own health advocate. Try different things, so long as they're safe. Research online. And keep the faith. We WILL get better!! Here's the interesting study I found. It may apply to you, too, since your problem involves excess mucus being produced. Good luck! file:///C:/Users/Shashi/Desktop/Health/Gut%20dysbiosis%20&%20sinusitis%20study.pdf