Hello Thank you for trusting HCM Dear swallowing of air during eating and drinking can cause abdominal bloating. Other possibilities like gastrentritis, gastritis, irritable bowel syndrome, inflammatory Bowel disease etc.. Avoid food that inducing bloating, few people feel bloting to dairy products,alcohol and caffeine. Avoid it, regular exercise and use tab.simethecone twice a day for five days. If symptoms not improved please consult your doctor he will examine and treat you accordingly. Take Care.