History noted. Nothing to be afraid please. For the kidney
stones this kind of surgeries is done now a days. The sound waves would have been used to break the big stones or impacted small stones. The stenting you have mentioned will be done post stone retrieval in order to prevent stricture formation (i-e) partial or complete closure of your ureter
. At times there is a possibility for the stent to recede up and gets coiled as mentioned. Do not worry as things happened till now is by the basic principles. Kindly believe the urologist
and you will get well soon. Get back to us once both the stents has been removed successfully.