Thanks for your question on Healthcare Magic.
I can understand your concern.
By your history and description, possibility of uncontrolled stress, anxiety and
depression related
chest tightness and pain are more.
But better to first rule out heart diseases as you are having left sided
chest discomfort.
So get done ecg and 2d echo.
If both these are normal then no need to worry for heart diseases.
In my opinion, you should
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 antidepressant drugs too. Avoid stress and tension, be relax and calm.
Don't worry, you will be alright.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.