@mckaylah, good for you for being able to manage your acid reflux through diet and now no longer need medication. You clearly are concerned about your health and prepared to be disciplined to improve it. Be sure to share your will power and dedication to your new doctor. Have you tried the breathing exercises that worked for @gabrielm and others? It's called the Buteyko method, but he can tell you more about it.

Mckaylah, what type of physical activity do you like to do? Is shortness of breath an issue when you exercise?