1) Drink 1 glass (250ml) 100% apple juice 4 times a day for 5 days. 1 glass at breakfast, 1 glass at lunch, 1 glass at dinner & 1 glass before going to bed. It softens the gallstones. Eat normally.
2) On the 6th day, skip dinner. At 6pm, take a teaspoon of Epsom salt (magnesium sulphate) with a glass of warm water. At 8 PM, repeat the same for purging purpose. It helps to flush out all solid stuff. It also opens the gallbladder ducts. At 10 PM, drink half a glass of olive oil mixed with half a glass of lemon juice. The oil lubricates the stones to ease their passage. Lemon juice helps to extract the stones out from gallbladder ducts.
Soon you will purge again. Be sure to stay at home and prepare many many trips to toilet. Pay attention to the eliminations, you can find greenish debris floating in your toilet bowl, if you have gallstones. You may want to count them.