Please advise me, I am often tired, or nauseous because of acid reflux. Recently, I often have a heart attack while sleeping, especially when I sleep for a long time, waking up in the morning is much more painful and accompanied by shortness of breath. I went to the doctor and the doctor said it was because of my stomach. Right now, I'm very worried about my health. Please advise me what to do? I would like to thank you!