Small hiatus hernia. no gerd, heartburn. what are the chances of this gettin bigger with time and give me symptoms ? anything to do to prevent hh? ty

May not be a problem: Many people have hiatal hernias without ever having problems. Anything that increases your intraabdominal pressure a lot, such as doing strenuous activity or coughing a lot, or obesity, can cause the hernia to get bigger. Decreasing those activities will reduce your risk of symptoms. Once you have the hernia, you can't prevent it. It won't resolve on its own.