Hi there.
From what you have described, all of these symptoms can be really part of your irritable bowel syndrome, however, the weight loss is the real cause of concern.
The fact that you have barrett's esophagus really predisposes you to the development of esophago-gastric cancer, which may also present with your current symptoms.
I suggest that aside from the ultrasound, you also discuss with your doctors regarding doing an esophago-gastroscopy, and possibly do some biopsy on the site of barrett's esophagus.
Until then, continue to eat well,especially foods high in fiber to aid in your bowel movement.
Wishing you all the best. Regards and God bless.
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