Hi welcome to health care magic.... Here if hernia present than protrusion is there on coughing in standing position... If piles there than bleeding in stool , painful defication and protrusion from anal area can be present ... You can have functional constipation that can lead gas formation ... Drink more water ... Fiber diet taken more like apple , whole grain , wheat bran etc.... Green leafy veg taken more Diegene syrup can be useful in acidity and gas ... Continue regular exercise .. Your physical examination nation should be done and than if needed USG abdomen done to investigate further .... Take care Advise : Physician consultation for examination...