Kim,
Try to go back to soups for a day or two to give your stomach a rest. This sometimes works for me. I have to carry baggies everywhere in case I get the urge to PB.....I never know what will trigger it, but I do think that stress is the factor in my episodes, either that or eating too fast. Some bad habits are really hard to break and I struggle with eating slow and chewing well, this gets me into trouble when I am really hungry and have to wait to eat something. It will be a lifelong battle though and I am prepared to fight it! One day I can eat something fine, the next day I can't keep it down. I guess I have a fickle band!