Thanks for your question on Healthcare Magic.
I can understand your concern.
First of all no need to worry for major heart and lung diseases because your all reports are normal.
Sometimes undiagnosed stress and
anxiety can cause similar symptoms like palpitations, breathlessness, gaseous
bloating etc.
So in my opinion, you should definitely
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.
Take
pantoprazole and levosulperide combination on empty stomach twice daily for gaseous bloating.
Avoid stress and tension, be relax and calm.
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.