Sounds similar to what I am experiencing. No brown fluid however. I never knew when I could eat and when I couldn't. Food was getting stuck in my esophagus which then caused horrible pain in my chest. Had to make myself vomit in order to relieve pain. My doctor unfilled my band after getting the results from my esophagus test. Was diganosed with nutcracker esophagus. The unfilled is an attempt to save my band. Go back for another test at the end of Sept. if I respond better he will slowly refil, if not it has to come out. I've been banded 3 years. Trying to figure out what was going on for over 2 years.