Does anyone experience excess mucus

Ever since I got really anxious and stressed two months ago I started getting this really annoying post nasal drip. I'm so sorry to gross anyone out, so if talking about mucus grosses you out then please don't continue reading. What happens is, I feel thick mucus drip from my nose down my throat. When I try to swallow it, it just clings to my throat and when I try to breathe in, some of it goes in my airway and makes me panic so much (I have a fear of choking). I just want to know if anyone else experiences something like this. If possible could you share your experiences? It will really help me rationalize mine. Also do you think this is dangerous? Can someone actually choke on mucus?