Hi and thanks for the query, It might be difficult on this clinical basis to determine if the stone is still existing or not. It is important to getting an abdominal ultrasound to aid in identifying and determining the sizes of any kidney stones if present. This is the main examination ascertain the presence of these stones. Intraveinous Urography shall ascertain any complications, dilation of ureters and position of kidney stones. Based on the these clinical findings and examinations, confirmation of the number, sizes and positions of the stones, if any, to ascertain the causes of the pain and subsequent management. It is also possible that other conditions could be at the origin of the spasms, but stones have to be carefully evaluated for first. Thanks and kind regards. Bain LE, MD.