Hi Ellie,
I hope you start to feel better soon. I too couldn't hold anything down and they did a ct scan and realized that I had a narrowing. They did an endoscope and things are much better. You will still have to be very careful about foods for a while they have to be extremely mushy to go down. You might even have to have 1 or 2 more endoscopes down until the narrowing is open all the way. I'll keep you in my prayers.
Take care,
Sharon