Dreaming and Dying

Last night I had the most terrifying dream: I was dying. It was so real that I could feel the breathing tube and the nurses doing compressions. I was lying in a hospital bed and I was surrounded by nurses and beeping noises and things kept going blurry and dark and I kept fighting to open my eyes and take breaths. One nurse was trying to get a tube down my throat and that seemed to help me breathe for a minute, but not long enough and I went back into a code. It was so horrible and I don't know if it's a sign that something is wrong with me or a sign that I need to shape up or just because I work in a hospital. Remember the dream with my best friend and the mark on my chest that got the whole cancer ball rolling? I'm literally paralyzed in fear right now. I feel sick to my stomach.