If a stone is present in the kidney and is less than 4mm, then it passes from the kidney
, through ureter followed by bladder, urethra and
through urine passes out.
But in case while moving down if it gets obstructed in any part of the tract it can cause pain as well as due to obstruction development of urinary tract infection is quiet common. The most common symptom of any infection in the urinary tract is burning sensation, increased frequency, urgency, discharge, foul smelling urine etc.