I Have Been Having Indigestion For The Last 2 Weeks,

I have been having indigestion for the last 2 weeks, a few days ago I almost threw up after a full meal, tasted sour in my mouth, I guess I might have stomach acid reflux. I also have chest pain and shortness of breath sometimes, feel very tired everyday for the last two months due to too much stress. I called my family doctor to make an appointment but was told to wait till next week. My I ask what I can do for the discomfort of my stomach and my tiredness while waiting. Thank you very much for your advice.
Marie