Hi.
Thanks for your query and an elucidate history.
You have classical symptoms of pain at front and back in the area of
kidney and the
ureter,
CT scan showed stones and you were treated for UTI.
I can decipher from your history a possibility of a stricture of ureter after the stone must have caused trauma and resultant stricture. The passage of the urine in peristaltic wave can cause the spasmodic , achy pain. The throbbing can be due to back-pressure.
I would advise you the Following:::
First of all the get an intravenous pyelography to for the structural damage the the
urinary system.
Ureteroscopy: helps in direct visualization, passage of the dye to get the contrast X-rays, this has a therapeutic value as passage of the
stent across the stricture can relieve your pain, reduce the infection, reduce the back-pressure on kidney with its side effects.
CT scan again: the first one showed kidney stones, The fresh one can show more than this and helps in diagnosis and ruling out other possible causes.
Once the diagnosis has been made, the treatment will depend upon the cause.