I had a tonsillectomy/adenoidectomy 6 months ago and my recovery was perfect, no problems. However, I noticed about a month later I started to have thick, mostly clear, saliva that I can't quite swallow. Sometimes the saliva is a little yellow, but it's usually clear and it drives me nuts. I thought it could have been allergies, so I tried allergy meds for three days w/o improvement. I have no known allergies.