How are you when eating more liquid foods like soup, If you can then i would go for them untill you are sorted out. I find things like sausages are impossible to eat, unless they are the skinless chipolata type., Chicken Kievs can be quite hard as well, so it might just be your choice of food that's giving you problems. I see you are about 8 months post op, has it always been like this or is it something new.
It could also be psychosomatic as well or a bit of addiction transference, in other words you have swapped you addiction to food for an addiction to no food.
Take whatever help they suggest.
Paul