Hey gary,
My brother deals with acid reflux/ibs quite a bit as well as anxiety and he describes it pretty much the same as what your experiencing. I've noticed a post nasal drip feeling in my throat before as well with acid relux from time to time. Feels thick and takes extra effort to swallow. The time of year might not help depending on where you live or are at the moment. Lots of alergies this time of year could also contribute to the post nasal drip feeling. I'm sure any kind of stress/anxiety will only enhance the discomfort. My brother has delta with it for years now and he's younger then me so I'm sure your going to be alright.
Take care