My kidneys are growing boulders. Hahah

I just got hospitalized for the 3rd time in 18 months with large kidney stones that cause sepsis. Only 7mm this time, 11mm last time. One minute I'm fine—no issues peeing, no pain. Then all of a sudden my back hurts... Go to the ER, get admitted, and I'm stuck there for at least 5 days on antibiotics and surgery. Like wth... Again.  But in 18 months and 3 hospitalizations, I've never once been able to pass a stone. I've had surgery EVERY TIME.  Something's got to give. I don't drink much soda or sugar. Not much salt in my cooking, and I barely eat fast food. And I drink tons of water and cranberry juice.... So I give up.  Ugggg, I just have to remove my own stent in two days.  (I'm a pro now) Lol, and we'll see what happens next. How long till the next one.  Usually it's one side then the other.  The last three times have all been on the left side hmmmm