Ans: In many cases, many people feel left side stomach pain or lower abdominal pain and it is found to be caused by diverticulitis. Diverticula are small pouches that are created from pressure on the weak spots in the colon. Diverticula are found to be very common, and when the pouch tears, swells or gets infected, it causes diverticulitis. Symptoms such as fever, nausea, vomiting, abdominal tenderness, and constipation are other symptoms associated with diverticulitis. In case of mild diverticulitis, many people are suggested to take rest, change the diet such as adding fibre in it, and antibiotics.The upper part of the abdomen has many important and necessary organs such as the stomach, spleen, pancreas, kidneys, adrenal glands, part of the colon, gallbladder, and liver. The pain in the right side of stomach may be caused due to the deposition of the gallstones, hepatitis, Gastroesophageal reflux disease (GERD), Gastritis, Hiatal hernia, and Gastroparesis.