I also have those fluttery feelings in my stomach and maybe my esophagus. I no longer take PPIs because of side effects and am just taking ranitidine now. When I asked my doctor about them he said they were harmless. I usually wake up in the night with them. I don't know what you can do to stop them-mine usually stop after a few minutes. It is scary though. I've been trying to eat fewer carbohydrates and it seems to be helping some.