Hi Robin,
I've heard some good results with kegals, but I also know quite a few women who that it didn't work for and stopped the problem by just strengthen their bladder by stopping the flow of urine when they go. Basically you let the stream start and then you try and stop it, and hold it for a minute then go again, then stop and hold etc. This is one I was also recommended to do by my urologist, when they did later break up of a few giant kidney stones, that were impassible, it also caused me to leak. And even the first 4 months after that, if I felt the urge to go, I better be hitting that bathroom door that moment and pulling down my pants, as I generally had less then two minutes of being able to hold it before there was no holding it. This really worked wonders for me, I run, jump, do whatever I wanted to do. Though last February I couldn't have said that. I didn't have a baby passing that way, but a quite a few big rocks instead that ended up stretching out the bladder, and it took strengthing the muscles to get it back into shape.
Good Luck,
Kit