Judy once again the calcium part has come up. Take calcium citrate make sure it has that on the front of bottle. It binds to the oxalate and keeps them form forming stones.
Yes everything good we eat forms oxalate . Sad but true and who can live a lifetime without greens?
I know you might have had this checked but just a reminder. Have your parathyroids checked. Not thyroid but parathyroids.They sit right on top of thyroids on either side of your neck. Not something most doctors know about. If out of whack they cause your body to suck out calcium out of your bones and make kidney stones. It is an easy test. Just and Necular medicine test ( type of test in Xray department)to see it one is or isn’t working. They might do an ultra sound too. But it is better to test for this and make sure they are ok. (Been there done that) . They can take out bad one and the problem stops right then. Just google and see.
Wish you had gotten better news on this.