I just wanted to mention here that with any reflux, laying in bed is not always the best thing, unless you've propped yourself up? I've had 2 endoscopies (EGD) and I've had a bit of an upset, but generally as Searchin' has mentioned it only lasted usually the first day - I even went shopping afterwards. If this continues, I would give your Dr. a call. Do you have a f/u with the results of this test? Keep us posted!
"Because he is he and I am I."......E. V. Lucas