i've just had an ambulance out because i thought i was going to die. I feel soooo stupid now and can't stop crying. How can panic make you feel so bad and yet medically nothing is wrong with you? Experienced symtoms stronger and like nothing i'd ever felt before- felt like my brain was 'rattling' in my head, was convinced i was going to pass out, was screaming as well.Has anyone else had these symtoms? Am going to see my gp later. thanxx