My son is 2.6 year old he is suffering with popping immediately after the meal and multiple time .this is happening from when I started solids to him.frequently he is getting redness on bum and thigh area he is crying lot and he is poor weight gain also .we don't know when he will poop because of this we cannot leave him without diaper.we visited so many doctors all are telling it's normal and they are giving medicine but we are not seeing any permanent solution for this.