Stomach heaviness. This. please suggest.

Hi, I don't understand my stomach & digestion. In night times, even though I am eating less I feel heaviness in the early morning though I am burning calories by doing some activities daily basis. Yesterday evening I played badminton from 6 to 7:30 pm. After some time I had just oats of 1 cup. Today early morning, I feel tired & heavy. Very rarely, I feel light overall after eating. In general, I have digestion problem. I go to rest room once per 2 days. Very rarely, I go once per day. Fyi, I am over weight &  do not have any gastric or acidity problems though in past I had. In past (over 10 years of time), I had 2 times endoscopy & one time colonoscopy. Colonoscopy, no issues. Last endoscopy, shown as pylorus deformed. Since then, whenever I go to doctors, they give sompraz D & ask me to drink fiber powder. It works. But how long, I have to face this. Please suggest.