Welcome on HCM.
Your problem is suggestive of not following dietary habit as advised by the surgeon to you.
In normal with gall bladder
the gall bladder stores Bile pigments in it so when you take food this released to digest fats in the food.
Now this bile is not stored in your body so you should take less fats and small diet at a time.
In place of two meals a day you should divide it in to 6 to 8 meals a day.
Your problem will be solved.