Hi, my husband had a gastric sleeve operation 6-10 months ago. He s had no problems until last week, when he started experiencing pain (on a scale of 1-10, a 7). The pain is in the belly button area . The pain is constant, like a toothache he says. It lessens when he lies down, and when he doesn t eat. Pain comes back upon sitting or standing, and after eating anything. He s gotten an upper GI, and nothing so far. He s getting a CT scan next week of his abdomen and pelvic area. What could this be?