so being a nurse, here is what I can recommend: eat small frequent meals. Don't lie down after you eat, and eat dried crackers, avoid food that has high acidic such as tomatoes, or drinking lemonades. Avoid exercising after eating. Avoid alcohol (yes, if you want the pain to go bye bye), and coffee.
GERD is a serious complication. You need to check with your doctor first. Most likely he will prescribe you a PPI (proton pump inhibitor), along with some Antacids, and H2 receptor antagonist. Don't take medications without seeing a physician first.