WELCOME TO HCM.
From the symptoms that you mention, it is unlikely that you have a heart disease
. Since you have consulted a doctor and he did not say that you have a heart disease, then you can rest assured that you have a healthy heart.
If you still suspect that you may be having heart disease, then you should consult a cardiologist
, get a echocardiography
done, which will clear your doubts completely.
Wish you all the best.