I was diagnosed with a calcification in the kidney, basically a kidney stone, and i am having severe back and side pain with occasional abdominal pain. In your experience, did you feel pain before it actually entered the ureter?
Could possibly be a stone in your ureter. If you have pain in that spot for more than 2-3 days, I would go to the doc... a stone may be stuck.
I am not a doc, just my opinion. I have been dealing with kidney stones for a few months now. I felt a stone move from my kidney to my bladder which was pretty uncomfortable. I would go to the doc if the pain stays for a few days, the stone may have gotten stuck.
Good luck.