Thanks for all these additional information.
I understand your concern.
Well as you describe,possible causes may include post nasal drip,Laryngopharyngeal acid reflux.
You should try nasal irrigation,steam inhalation and saline gargles.
Also take OTC Prilosec empty stomach and Zantac 150 mg after meals at bed time.
You should use a humidifier in your room.
You should do oral betadine rinse.
Nasal saline spray and OTC Nasonex nasal spray can be tried.
You should elevate your head while lying down.
You should eat a bland diet.
Avoid spicy,fried,greasy food,carbonated beverages.
You should hydrate yourself with plenty of fluids,green tea.
You should start a multivitamin supplement to boost your immunity.
You should undergo sputum culture,laryngoscopy and see an ENT specialist for further evaluation and management.
Let me know if you have any further query so we can discuss it thoroughly in every aspect.
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