Could you try for several small meals several times a day? You could get some whey protein and mix it with milk to get your protein. What about things like ensure, boost or carnation breakfast to keep calories going in? Are you taking any vitamins or supplements? I do understand your concern. I have serious gastrointestinal problems and there are weeks at a time that I can hardly keep water down. I'm usually stuck with soup and mashed potatoes...one slow spoonful at a time. Good luck and best wishes.