A few suggestions:
Don't eat any solid food except for the grapefruit juice with pulp, especially anything with fat or oil except for the olive oil until you feel better.
Make a strong peppermint or spearment tea to help relax the intestine and use a herbal laxative to clear out the small intestine (magnesium laxatives work on the large intestine).
I gently massage the upper abdomen which helps push large stones out the bile duct. If you feel dehydrated add a sprinkle of salt to your water - I also add a sprinkle of potassium chloride. Some people use a balanced electrolyte drink.