Thanks for your question on Healthcare Magic.
I can understand your concern.
First of all don't think about
lung cancer and esophageal spread because at your age without
smoking habit, lung cancer is extremely unlikely.
So don't worry about lung cancer.
Labored breathing and
chest pain in young individual is mostly due to asthma.
So better to
consult pulmonologist and get done clinical examination of respiratory system, chest x ray and PFT (Pulmonary Function Test).
If chest x ray is normal then no need to worry for lung cancer.
PFT is must for the diagnosis of asthma.
Don't worry, you will be alright with inhaled bronchodilators and inhaled corticosteroid.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.