Eating something like bread before drinking alcohol will line your stomach, also drinking water between each alcoholic drink will make it less likely that you are sick or get a hangover. Mixing milk and alcohol is more likely to make you sick as the milk will curdle.
Belching, also known as burping, is the act of expelling gas from the stomach out through the mouth. The usual cause of belching is a distended (inflated) stomach caused by swallowed air. The distention of the stomach causes abdominal discomfort, and the belching expels the air and relieves the discomfort.
Here are the most common causes and treatments for a hard stomach: When your body breaks down food, sometimes gas can result. A buildup of gas leads to bloating, or a swelling of the stomach and abdomen. This swelling can make your stomach feel hard, sometimes brings pain and might make you feel general discomfort. This is often caused by various foods or beverages, swallowed air, some medical conditions, constipation or medications.