Hi, Welcome to health care magic, I have read your query and understand the concern. The soft bowel movements could be related to irritable bowel syndrome or stomach hyper motility. You have a family history of colon cancer does not necessarily mean that you will also have it,so I would not think this possibility at present. You should undergo routine blood investigations with urine and stool examination for R/M and ova or ultrasound of abdomen since you did colonoscopy few years back and probably it came normal at that time. If you not changed your diet habit and still having reduced frequency of bowel habit with abdominal bloating then you should start some medication like proton pump inhibitors (pantoprazole or rabeprazole),avoid excess carbohydrates and fatty foods, avoid oily and spicy foods. If problems persist then you should go to gastroenterologist to treat underlying cause. Thanks and Regards,