Thanks for your question on Healthcare Magic.
I can understand your concern.
In my opinion, your all symptoms are mostly due to
stress and
anxiety.
But better to first rule out heart related diseases like
arrhythmia (rhythm disturbances in heart) as this can cause similar symptoms.
So get done ecg, 2d echo and Holter monitoring (24 hours continuous recording of ecg).
If all these these are normal then no need to worry for arrhythmia and other heart diseases.
Possibility of stress and anxiety is more in your case.
So better to
consult psychiatrist and get done
counselling sessions.
Try to identify stressor in your life and start working on it's solution.
You may need anxiolytic and other supportive drugs. Don't worry, you will be alright with all these.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks