nausea and vomiting

My fiance has had nausea and vomiting for 10 days now. He has had a ct of abdomen, endoscopy and colonoscopy. The ct was negative. The colonoscopy showed some small ulcers on the small intestine and the endoscopy showed esophagitis. He was taking ibuprfen which could explaine the ulcers.He was put on prilosec 20 mgs bid. He continues to vomit starting in the morning following a bowel movement. Ive noted a pattern of vomiting the next day after eating solid food but not miting the next day after having just clear liquids. Zofran and phenergan do nothing for the nausea. He usually is nauseated for about 10 hrs during the day then it suddenly goes away with no rhyme or reason. They did byopsies to check for celiac disease. We dont have the results of the byopsies yet. About a month prior to all this he had nausea and would vomit after his am bowel movement. He was put on flagyl and cipro and felt great for several weeks until the above.
Anybody want to comment? We are both so stressed from this. Help !