Hello, yes I have been there. I was banded in 2008 and lost 65 pounds but always cheated. Then two years ago I wasn't able to keep anything down and was vomiting 2-3 times a day. My stomach felt like a "raw piece of meat." I was constantly taking antacids and had horrible reflux to the point I had to sleep sitting up. I was just miserable but since I was banded in Oregon and now lived in Arizona that made it difficult to go in to see a doctor. My doctor didn't know what to do for me and said maybe I should go back to Oregon and see my old doc???? Oh, boy!!
Anyway, one day I started throwing up brown coffee-ground looking Fluid and thru the Internet I figured out this was blood. I went to my closest ER and they sent me home with Vicodin--just what I needed for my stomach ache. I called my old doc and she recommended a doctor in Phoenix and this required another trip to the ER and they put me in bed. I waited and waited but no one knew what to do--finally a PA came by and said he was going to release the fill and that did it. I threw on my clothes and got out of there.
I still have problems with eating too fast or too much and have to vomit to relieve the pressure in my stomach. I am pretty sure the band has slipped or twisted because I do have some restriction. I am interested in knowing what you find out because your symptoms are exactly like mine.
Good luck to you and I feel your pain.