Meep - since your gallbladder surgery, are you on meds? There's a specific med you might need - probably for life, but it could mean that your IBS will go away completely. Let me find the link for you. I would say, on a weekend or a night that you don't have to go anywhere the next day, try a very small salad after a very safe meal with lots of SF. Make sure that you CHEW VERY THOROUGHLY ( I speak from experience - don't ask)