I have pain on left side and on the knee due to kidney stones of 2-4mm my doc gave me kallagon and some other tablets. its been 3 weeks no improvement?

Different conditions: I had to google Kellagon which I have no experience with. Based on the description that may take time to work. I do not find any connection with the knee pain that should have nothing to do with your kidney stones and it is probably caused by a different condition. Would suggest checking back with your doctor, focusing on the pain circumstances, and including your left hip as a possibility.