Thanks for your question on Healthcare Magic.
I can understand your concern.
By your history and description, we should first rule out heart diseases for your symptoms.
So get done ecg, 2d echo and
stress test (trade mill test).
If all these are normal then no need to worry for heart diseases.
Sometimes undiagnosed stress and
anxiety can also cause similar symptoms.
Consult psychiatrist and get done
counselling sessions. Try to identify stressor in your life and start working on its solution.
You may need anxiolytic drugs too.
So avoid stress and tension, be relax and calm.
Don't worry, you will be alright but first rule out heart diseases.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.