I know a guy who got kidney stones from his well water...the doctor knew other men from the same street he lived on and said, Oh you live on kidney stone alley! So I wonder what kind of water you drink? Also, the type as mentioned previously matters. How it's made. I read to get it in a feed store because the turnover is greater then for people but I still think you have to care that it's not made chemically.
Hopefully, you can try good water, good MSM and get back to where you were or better!