I had a accident at work a while ago,3weeks. (inhaled gas from mixed chemicals) Since that day I have been fighting with chest pain, heartbeats, feeling that my heart is stoping, constant feeling that something is wrong, insomnia, heartburn, cold sensations in head, headaches, yesterday I had terrible sharp pain in the belly and rushed to the hospital, they did blood tests,wee tests and ecg/ekg...Everything was perfectly normal. My whole family says it is anxiety. Doctors also can't find a reason for it and I am totally losing it.. What should I d? Could it be something else or is it pure anxiety.. Every day there is a new symptom..