For the past month I've been having chest pain, been dizzy, had a awkward taste in my mouth, fast heart beat, muscle spasms, lower abdominal pain and headaches. Went to the er three times they did alot of tests. Total 3 Chest x rays, a head and abdomen ct scan, ekg, took blood twice. Everything came back good. Does anyone of a idea of what might be causing this? Could it be anxiety or stress? I honestly feel like im dying, i cry alot because i don't wanna die. But if i was dying they would have known at the er right? Could it be a nerve disorder? Is someone going through something similar? I feel like at any minute i could just drop dead. Please help!!