 [ Symptoms ] how can i find a doctor for a specific breathing issue  if i walk up stairs or cardio exercise i am out of breath immediately my heart pounds and my legs feel tight i have been seeing multiple doctors to no avail i have been told acid reflux asthma and vocal cord dysfunction i have seen doctors for and treated all 3 and guess what   i still can not breathe  how do i find a doctor to treat this i have asked to be sent to a cardiologist    but i do not think i should be doing all the guessing here and throwing my money away thank you [ Disease ] since the heart is the pump that supplies oxygen from your lungs and since you are getting out of breath with minor exertion seeing a cardiologist is a good next step you may need an exercise treadmill test with attached to an electrocardiogram oxygen sensor and ultrasound i do not think this important evaluation to rule out a heart related cause would be a waste of money