Hey guys so I've got a question. I don't have anxiety in the sense of constant worry or racing thoughts. But I'm always in a fog and sometimes I'll get a random high anxiety moment. An example would be like today I was just sitting down on my phone then felt something like pressure on the right side of my chest which caused me to freak out and felt like I couldn't breath. also caused pressure in my nose as well. 

I guess my question is does anxiety cause those weird feelings or do those feelings cause the anxiety. My doc says its GAD but I'm curious how something mental makes something physical.