I struggle EVERYDAY to sit in a lecture room full of people and not have an inner battle trying to keep myself from bursting out thru that door and never coming back. It probably doesnt help that I study physiology so every second im thinking about my resipiration and heart rate, i hear every beat and am concious of every breath i take. I keep thinking my heart will stop any second. 1 second im sitting in my class thinking about something, the next im sweating, im panicking, my heart rate increases! Im obsessed with where we go after we die, im scared of not existing anymore. IM GOING CRAZY. I feel pressure on my chest, my breathing is shallow because I CANT TAKE A FULL BREATH. I went to the doctor, she said she cant hear anything in my lungs. but im thinking its my heart. I havent had proper sleep in weeks thinking i will die tonight, this is it, im done. HELP PLEASE im 20 years old and i have too much to deal with, this feels silly, i have exams coming up and i cant focus on anything but the fact that im going to DIE ANY SECOND