Thanks for your question on Healthcare Magic.
I can understand your concern.
In my opinion, we should first rule out heart and lung diseases for your symptoms because heart diseases like
arrhythmia and lung diseases like asthma and
bronchitis can cause similar symptoms.
So
consult doctor and get done
1. Ecg, 2d echo and blood pressure monitoring too rule out heart diseases.
2. Clinical examination of respiratory system and PFT (pulmonary function test) to rule out asthma and bronchitis.
It all these are normal then no need to worry for major heart or lung related diseases.. Sometimes, stress and anxiety can also cause similar symptoms.
So avoid stress and tension, be relax and calm.
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 drugs too.
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.