Bowel and Gas problems. A year now.

Hi..The exact symptoms-After waking up pressure takes time to build up even after drinking warm glass of water and still Incomplete Bowel Evacuation in the morning..While brushing slight yellowish watery liquid comes out from mouth..Sense of fullness and bloated feeling some time after eating breakfast and then throughout the day..Motion also after some time of breakfast..Excessive belching and gassiness throughout the day.. Lower abdominal pain at times.. While breathing feeling of some obstruction in abdomen.. Sense of motion at times in a day.. Sometimes slight stomach acid also comes in oesophagus..Stool formation is semi solid.. Endoscopy reports are normal. This is happening since a year now.