I've had those and they hurt pretty bad! I doubt it has caused your wrap to come undone. I'm told if it comes undone, you know it. Food could be sitting on your wrap. Try and drink something warm before you eat. The esophagus is a "dumb" organ and will produce symptoms like you're having, but it's really nothing to worry about. If I were you, give your GI doc a call and express your concerns.
LapNissen Fundoplication, 8/9/13
GERD, Anxiety, Depression