the discomfort wasn't so much acid reflux as it was the liver/common bile duct. That's what really causes the burning, the liver. After a few liver/gallbladder flushes that will change. The fiber and water really moved something, or blocked something for alittle while, and caused a 'back up." (things are meant to always go in one direction and get wonky when they have to reverse or get stagnant - the body will spasm before it allows stagnation).
You may want to consider starting out with colonics/enemas and Colosan. For people wtih a lot of impacted fecal matter, that is often easier (don't take Colosan while experiencing diarrhea). A comfy-er cleanse. :)
Anyway, hope that helps, I've got more info on my FAQ page in the Ask Shelley forum. :)