Feeling sick... Anxiety? Depressions? Heart problem? :(?

You have had the ECG its normal so stop pretending to have a heart condition you are not going to die for at least another 50 years could be 80 years. Don't just lie around and wait for the grim reaper because it will be a long wait. Rule number 1 if you feel sick don't eat after a couple of days you will feel better. What about work, get some money save it up go on holiday sounds good to me. Good luck.