This is an interesting topic for me because in the past year it's been a big problem, or I should say another chronic problem to cope with. I've lived with Sjogrens for 30 years. Over the years I have more not less symptoms. I had Covid for the first time October 2024. Ever since that time I've had this thick mucus, even changes my ability to speak clearly. Sinus congestion too. I had come to think it was from Covid, some kind of long Covid problem. But when I read your post, I wonder if it could be Sjogren's. @lindatucson mentions guafenisen and I buy a generic and thought I was out of my mind when it helped! I mean, I thought that was just for colds and flu. Whatever is causing it, it always helps to get ideas about how to COPE!