I had gastric sleeve done on 2/10/2016 and a hiatial hernia repair on 9/12/2016. The last few weeks I have been throwing up 3 to 4 times a day. When I eat I become very nauseated then usually throw up, sometimes its 30 mins to an hour after eating and the food isnt fully digested if at all. I am starting to become quite concerned. What could be the cause of all this?