Prolonged Indigestion. Of this problem.

Hello doctor, I've been suffering from prolonged indigestion, gastric problem and acidity. My stomach is always bloated like a balloon. My bowel movement is also very disturbed, I sometimes suffer weeks at a stretch without any bowel movement even after taking laxatives like MOM PLUS & Dulcoflex. Even if I drink a glass of water my stomach bloats like I've eaten heavily. Sometimes the upper stomach gets sudden pain which lasts for weeks. Many times I feel like there is a lead ball in my upper stomach which does not let anything go down. I also suffer hugely from acidity. Nothing gets digested easily and I keep having acid reflex in my throat. Due to constant bloating, I feel very lazy everytime. I cannot work for an hour everytime I have a meal and feel like just resting then. A recently done ultrasound report read 'Abdomen is full of gases' Please advice me my course of action to get rid of this problem.