Hi, Welcome to Healthcaremagic!
Gastro-intestinal problems like gas at your age are usually uncommon & may be due to erratic diets, excessive spices, junk foods etc., but other causes like irritable bowel syndrome
, inflammatory bowel diseases must also be ruled out. Do you have associated weight loss
, or dysphagia or vomiting etc. You may take OTC antacids like digene but please also consult a general physician or gastroenterologist. Good luck.