All the responses tell me that this might be a virus that went around and caused this. But I don't have any sinus blockage and I do not have much nasal drip down the back of my throat. It is like I have stick contact cement or barge cement stuck in my throat right where I swallow. It is just about there all the time to some degree or another. I never have had COVID but if I did, there were no symptoms. I have had eight COVID vaccines and all on time. What I had last year started with the worst cough I have ever had and it lasted a month. Then it subsided but still had this mucus in my throat. It got better last summer but returned November. I use Fisherman's Friends Lozenges which help a bit.