I had SEVERE reflux after my surgery as well, and was up to 4 Prilosec a day, plus Tums as needed. When I talked to the ARNP, she actually said it may be bile reflux, not acid reflux (I'd had my gallbladder removed in 2005 and not had any type of reflux problems before surgery). She said the best way to find out what type of reflux it is - when you're having a bout of reflux, suck on a raw lemon. (horrible I know) - but if it's BILE reflux, vs acid reflux, the lemon will help IMMEDIATELY. i still take Prilosec once a day, and my reflux has been under control for the past 6 months or so. If I ever feel some reflux coming on, I cut 1 segment of lemon, suck it down and I'm all better!
Hope that helps