Thanks everyone. That link is great, dar! I saw it when I was searching, but I thought it would be pushing a drug or something since Merck is a drug company. Lots of good information. Although, I read on another site that alcohol can be a cause, but that site doesn't mention anything.
The plan is to take new stomach medicine (the Prevacid was bothering me) for 2 weeks, stay away from anything but tylenol, and (by my own decision) stay away from alcohol just to be safe.
My mom was saying that she had gastritis, but it was taken care of by medicine (the purple pill, can't remember the name) and now her gallstones don't bother her. There's that silver lining! Maybe this will stop my pain and I won't need surgery....for a while