The symptoms you describe, heavy central chest pain radiating to your neck, especially in the mornings, are serious and require immediate medical evaluation. While these symptoms can sometimes be related to severe acid reflux (GERD), they are classic warning signs of a heart condition, such as angina or a heart attack, especially given your history of high blood pressure. Do not attempt to self-medicate. Please seek emergency medical care or consult a cardiologist immediately for an ECG and cardiac evaluation. If the pain is severe, accompanied by sweating, shortness of breath, or dizziness, call emergency services right away.