Try it a few morw times while taking Turmeric and Milk Thistle capsules. Also, drink a tea called Chanca Piedra (Phyllanthus Nuiri) That will dissolve the bad calcium over time.
I would also eat 2 green apples a day a week before you do another cleans so the pectin in apples will help soften the stones.
I wont tell you not to go ahead with surgery as only a doctor can advise and you know the urgency of your situation 1st hand.
But if you do decide to postpone for 3 weeks, Take the Capsles 3 times a day. 2 of each (Turmeric & Milk Thistle) Drink the Chanca Piedra tea 3 times a day, made strong and sweeten ONLY with raw organic honey.