Thanks for your question on Health Care Magic.
I can understand your concern.
By your history and description, possibility of
stress related breathing problem is more in your case.
But better to get done chest
x ray and PFT (Pulmonary Function Test) first to rule out lung related causes.
If both are normal then possibility of stress and
anxiety is more.
So better to
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. Avoid stress and tension. Be relax and calm.
Hope I have solved your query.
Wish you good health. Thanks.