You should consult a doctor immediately. Chest pain triggered by physical exertion (running) is a critical warning sign of a potential heart issue, such as angina. While pain after eating can sometimes be acid reflux, it can also be cardiac-related. Do not start any self-medication, as taking the wrong medicine can be highly dangerous without a proper diagnosis. If your chest pain is severe, spreads to your arm, neck, or jaw, or is accompanied by shortness of breath, sweating, or dizziness, please call emergency services (like 911) right away. Please seek a professional medical evaluation without delay.