Hi, occasionally there could be indigestion and the food may appear undigested. Other causes could be due to malabsorption, inflammatory bowel diseases and various infections of the colon. Blood tests will help detect infections, besides stool examination which will reveal malabsorption. Colonoscopy and flexible sigmoidoscopy are procedures which are used to study the whole colon for infections and inflammations. Bacterial overgrowth is tested with a breath test. So, if your symptoms persist, discuss this with your doctor. Try to include yogurt in your diet as it is a probiotic which replaces lactobacillus acidophilus (good bacteria) that helps with digestion. Regards.
I also a lot of lower chest pain left or right