Welcome to HCM.
It is difficult to predict without examination but based on the information you have provided, i think it is either due to anxiety
/ your subjective feeling or may be you might be suffering from some respiratory tract
It is more of anxiety than anything else. I advice you to speak with your parents and you will be fine.
If the symptom persists it will better if you go for x ray
chest and ECG AND to see physician.
Hope I have provided the information you needed.
Wish you good health. Take care.