Hi, I've been suffering with allergies and sinus problems for awhile now. Basically my main problem is post nasal drip. I constantly have this feeling in the back of my throat like something is there, and I constantly and sucking out/coughing out and spitting out mucus (white and clear). However, at random times during the day I have these short periods (last about 5 minutes or so) where I feel like I can't breathe. It's a very strange feeling....like my throat feels heavy and I can't take deep breaths because my throat is being blocked and then I get this hot feeling that comes over me, I mean technically I can still breathe but it makes me really nervous. I really dont think its an anxiety attack or anything because my heart doesn't race and I'm not nervous/anxious prior to that....its just a really odd/scary feeling and it makes me feel like I cant breathe. Does anyone know of anything it could be or anyone that can relate??