I have been experiencing excruciating jaw pain that travels to my chest which feels like a vice, these I know are symptoms of heart attack or panic attack but it happens when I am completely at rest and ease. I have been examined many times and my heart is fine, been rushed to hospital by ambulance twice, blood tests etc and no answer. What are they missing, what is the reason for these attacks, they happen every few months and are becoming more frequent. HELP!!