So almost a year ago one night I was getting high. It was late at night and I was alone and before I knew it, it started getting hard to breather and I thought I was about to die. I turned out fine and the doctors said nothing was wrong with my heart. Up until this day I think I have anxiety because sometimes I feel a shortness of breathe or weird feeling/tightness in my chest (which are all symptoms of anxiety). I don’t want to workout or push myself to do much anymore.. does anyone else know about this?