Since your heart tests are normal, your chest pain is likely non-cardiac. Your current prescription, especially rabeprazole (for acid reflux) alongside antibiotics and antifungals, suggests your doctor is treating a gastrointestinal issue or esophageal infection, which frequently mimics chest pain. The 50% improvement is a positive sign that this treatment is working. Please do not start any new medications without consulting your doctor. Complete your prescribed course, and if the pain persists, follow up with your physician. They may adjust your acid-suppressing medication, suggest an antacid, or recommend an endoscopy. If you experience sudden shortness of breath or radiating pain, please seek immediate medical attention.