You should also see a doctor if your pain is so severe that it prevents you from living your life. The following symptoms may also indicate an underlying condition that needs treatment:  Nausea that doesn’t go away Black, tarry stool or bright red bloody streaks Severe diarrhea or constipation Chest pain Unexplained weight loss There are several conditions which can have similar symptoms to gas. This means that if you aren’t sure that your symptoms are just gas, you may want to get checked by a doctor. The following conditions may produce symptoms that feel like gas:  Appendicitis Gall stones An obstructed bowel Irritable bowel syndrome Heart diseases Be honest and open with your doctor. In order to best diagnose you, your doctor will need to examine you physically and talk about your diet.  Let your doctor tap your abdomen and listen to whether it sounds hollow. If so, it suggests you have a lot of gas. Your doctor will also listen to your abdomen with a stethoscope. Loud rumbling and gurgling noises may be a sign that the intestines are full of gas. Give your doctor an honest summary of your eating habits. Provide your doctor with your medical records, including a complete list of medications, supplements, and vitamins that you take.

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Write a summary of the previous text in Vietnamese:
Đi khám bác sĩ nếu có dấu hiệu của bệnh lý tiềm ẩn. Chủ động tìm hiểu các triệu chứng nghiêm trọng. Đi khám bệnh.