First of all I have tmj. I have been having this weird feeling in the back of my throat. It only happens a few times a day. It happens more when I lay down. It feels like air or some type of pressure that just happens in the back of my throat. I have been getting these little white pieces of stuff that comes from the back of the throat. It smells really bad. I have been noticing that I have had a whitish mucus or snot on the back wall of my throat behind the uvala. I have had a ct scan of the head and the nasal cavity and everything is normal. I feel like I cant breathe at times. Could this be a post nasal drip or some kind of sinus problem. Thanks