Hello Thanks for query . You have undergone ESWL to fragment stone in your upper ureter and now getting severe pain in abdomen The pain is most likely to be due to the facts that fragments of the stone have stuck up at Uretero Vesical Junction (UVJ)which is the narrowest part of terminal portion of ureter . Take following medications 1) Tab Tomsulosin once daily 2) Tab Drotaverine twice daily 3) Antibiotic to prevent infection . 4) Ensure you drink more water to produce more urine and there by help to pass the fragments quickly Do not worry these fragments will come down in bladder spontaneously within a day or two . Dr.Patil.