Today is my first day back to work after a 6 day vacation and I already feel tightness in my chest and anxiety. I've never felt this way at a job before. In my life. I absolutely hate it here and the way this company is ran. I start my shift at 3. I tried to call off today to think since I had a death that has affected me recently but they will not let me call off. I am seriously thinking of quitting right now. I'm worried about job abandonment and what should I do. Thank you.