I notice that you said they found 3 X 3
stones (plural), indicating more than one 3 X 3 stone. Am I correct
in assuming that from what you wrote? If you had more than one stone, then yes, it's very possible that you could continue to have pain and discomfort until all the stones you have completely pass. If you only had one stone, slight discomfort after passing it is possible, but that discomfort should not last very long.