Charm, I have that happen quite a bit. My GI Dr has told me it is due to my esophagitis and acid reflux brought on my rads. I have to take acid reflux meds now for the rest of my life. The espohagitis is what put me in the hospital because it was so bad, and was graded the wrost you could grade an esophagus. Anyway, I would just keep watching it. Do you even feel sick to your stomach? Light headed or weaker than your usual self? I would definitely keep an out and call your Dr. Tuesday about it. I know my GI Dr. keeps tabs on me by checking blood work periodically.