Thanks for your question on Health Care Magic.
I can understand your concern.
At your age of 32 years, cardiac and respiratory diseases are unlikely which can cause similar symptoms. So possibility of
stress and
anxiety related symptoms is more.
But better to get done ecg again to rule out cardiac diseases.
Get done chest
x ray and PFT (Pulmonary Function Test) to rule out
bronchitis.
If all these tests are normal than stress and anxiety are likely cause for your symptoms.
So avoid stress and tension. Be relax and calm.
Consult psychiatrist and get done counseling sessions. Try to identify stressor in your life and start working on its solution.
You may need anxiolytic drugs too.
So don't worry, you will be alright.
Hope I have solved your query.
Wish you good health. Thanks.