if you don't have significant pain abdomen you dont need to worry about amylase . Gerd can be managed with medication and lifestyle changes Increase flatulence (gas from anus) can be because of multitude of factors depending upon type of diet ,physical activity , associated incomplete ineffective defecation.  Increase your physical exercise, increase water intake , balance your daily fiber intake and take curd daily.  If you r a diabetic, make sure your diabetes is well controlled. if flatulence doesnt improve by these changes u need to consult a Gastroenterologist