Hello ....Stones that are smaller than 5mm are more likely to be able to pass successfully without requiring surgery. When a stone is larger (>6mm) and unlikely to pass successfully, Stones that are growing are more likely to lead to problems while stones that stay the same size are less likely to become symptomatic. .. Check your urination frequency.. If there is pain on urination or frequent urination consult urologist. Sometimes stones get dislodge and get stuck in ureter..