Sticky saliva comes up from throat. Me?

I have been to a lot of doctors but this thing is not getting cured. So on last week of May 2021(it will be 4month now) I was sleeping in night and i felt suddenly my mouth was full of foamy saliva. After that night, I have ran to the washroom every 10 mins to spit out the built up saliva in my mouth for 3 months straight..at present date, it has turned into a sticky saliva.it does not build up that frequent but it is still there in my throat/mouth. Also I have noticed when i eat anything..the sticky saliva is generated more in my throat that I have to spit out several times until the saliva volume decreases. I have take deworming tablets too. Also the sticky saliva doesn't have any taste as such.. Can anyone tell me what is happening to me?