Boy, can I identify with the kidney stone problem and the associated pain. I grew a stone about the size of a pencil eraser, which got impacted, naturally, since it was far to big to pass. I had to have it surgically removed, through the plumbing, after three weeks of agony. Because of my history, when I started on Topamax, I made sure I drank lots of fluids, and really watched my calcium intake. I took the Topamax for about eight months, but unfortunately it did not help my migraines, and the side effects to too severe to continue it any longer.
My suggestion would be to ask your doctor if you could try it again, as long as you drink lots of fluids and watch the calcium intake. He can always say "no", but there's no harm in asking.
Let us know what happens.
"The weather is here, I wish you were beautiful."