I had gastric bypass surgery in february 2003 and no problems what so ever, could eat almost anything, no probems with fish, beef, veal etc., everything was great. Then this past january 2005 after eating a salmon fillet I was sick and after that every other time I ate fish I woud get these pains in my lower abdomen, bloating feeling, feeling of heaviness in my stomach, alot of burping, and nausea, on occasion some gagging but never vomited on my own. I would have to stick my finger down my throat to get something to come out. Once I got everything up I felt great. This usually happens in the evenings after I have eaten supper. Now this past week it has also started after eating a steak. I have had no gastric reflux, no significant changes in bowel movements just the above symptoms after eating my protein with my evening meal.
Has anyone else had the same symptoms and if so what could be the cause? I do have an appointement to see my family doctor beginning of april but sure would like some ideas before I go to see him so I can suggest some possible tests etc.

Thanks
shatyl