Wow, a 7cm stone would be quite large though not impossible. You definitely need to follow up with a good urologist!!
I would encouraged you to get copies of your report and read it carefully. Were are all you stones? Do youhave stones in the collecting ducts or Medullary? I ask because we have an MSK support group here on Medhelp. Medullary Sponge Kidney disease. Many of us have
chronic unexplained pain at least by standard test. One reason is that biofilm infections can set up with in and on kidney stones. Most big stones are known as infectious stones but bacteria can build biofilms on small and calcium oxalate stones as well. Feel free to pm for more information or links on Biofilm infection and kidney stones.
Here is the link to the MSK support group here. Though you may not have MSK there is a lot of info on kidney stones, infection and chronic pain etc.
There are also some specific articles on MSK and pain in the health pages here:
There is a lot of good info in the health pages as well, here is the link f for all them:
Hang in there!!