Hi, Stomach bloating is caused mainly because of air swallowing known as erophagia or irritable bowel syndrome,dyspepsia, constipation ,celiac disease,sprue,bowel obstruction etc. As you had already history of colon cancer and must be taking treatment for that. If you have fever,diarrhoea,flatulence and still having abdominal bloating or distension then u should start some medication like proton pump inhibitors,avoid excess carbohydrates and fatty foods, avoid oily and spicy foods. Treatment is mainly depend on the underlying cause but symptomatic treatment can be given. You may require antibiotics (quinolones, antiprotozoals or amoxycillin derivatives)and anti helminthic (albendazole) with proton pump inhibitors like pantoprazole or rabeprazole and prebiotics and probiotics. You should consult to gastroenterologist to treat underlying cause.