<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have been experiencing nausea, stomach bloating, heartburn, and regurgitation. Can you tell me what might be causing these symptoms?  <response>: Based on your symptoms, it is possible that you may have a condition known as stricture of the esophagus. This is a narrowing of the esophagus which can lead to difficulty swallowing, chest pain, and acid reflux-like symptoms. We will perform some tests to confirm the diagnosis and develop a treatment plan. 