Welcome to Health Care Magic
You must see a Psychiatrist
I presume it is post-traumatic...
Your chances of improvement are excellent.
You may not have significant heart disease
If it is, it will not be limited to lying down / it will not be 'pins and needles'
If in doubt go to ER
Subsequently, EKG / HOLTER (24 to 48 hour ambulatory monitoring) / ECHOcardiogram
/ TMT (Treadmill exercise ECG) / LABORATORY work-up – may all be done for your reassurance. The treating doctor may suggest them depending on need, based on his assessment of the situation.
Wishing speedy recovery