Here are some ...
Largely, 85% of patients will pass a 4-mm stone through the ureter in 2 weeks; of course, it comes with price of pain.
Meanwhile, a smaller stone than 4 mm doesn't mean it will pass and >4 mm up to 10 mm doesn't mean it will never pass. So, historical virification of the side and size of stone passed may be very useful for observation and reassurance. For individual detail, ask Doc timely.