I'm so sorry. I sincerely empathize. I am still battling thick, excessive sticky saliva since Covid last year. I choke on it at night sometimes. It gets stuck in the back of my throat. Metallic taste in mouth, bad breath. What I can get up out of back of throat is white like sour cream. I have been to my primary, ENT, Dentist, Infectious Disease & Dermatologist. Culture of mouth comes back negative. B12 was low and injections helped with metallic taste, but, didn't eradicate the thick, slimy saliva. Staying hydrated. Got off sugar. Tongue (after brushing/scraping off excessive saliva) in morning is white. I scrape my tongue 6-7 times a day to get rid of the sticky saliva. I have to spit all day long because of excessive saliva. I am convinced this thick stuff that goes down my throat is causing recurrent bronchitis. Never had this until Covid. Doctors are baffled. Any suggestions? Thank you and God bless.