Thanks for your question on Healthcare Magic.
I can understand your concern.
No need to worry for heart diseases as a cause for your symptoms because you are young (23) and having normal ecg .
In my opinion, your symptoms are mostly due to uncontrolled asthma.
Ventorlin is having
salbutamol. It is rescue drug. It is not drug of choice for long term control in asthma.
In my opinion, you should
consult pulmonologist and get done clinical examination of respiratory system and PFT (pulmonary function test).
PFT will also tell you about severity of the disease and treatment is based on severity only.
You will improve with inhaled
bronchodilator (formoterol or salmeterol) and inhaled
corticosteroids (ICS) (budesonide or
fluticasone).
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.