Cholecystokinin is a neurotransmitter which is both in the brain and the gut. Going back to your post, of course bec i'm sitting here with a left ovarian cyst, i am thinking about your situation and just wondering, tell me K - did you ever have heartburn before you took a ppi med. Or is it just now that this has happened. I know you are thinking it was from antibiotic for the bladder infection or whatever. The meds make you hypersecrete for a while.
Some folks can hypersecrete acid for a couple to a few weeks after ppi use.
I thing I also got some rebound hypersecretion from using h2's as well. If you do the ph too soon, it may show that you have an acid problem, when in reality you may not, but are just going thru a period of rebound. My rebound is finally over now, I have been off a month. While I dont know the results yet, I somehow doubt I am a candidate for surgery just yet. I don't think my reflux is acidic enough for long enough to warrant the surgery at this time.