Uncontrolled bladder

I had a very bad infection that was on my spine some 6 or 7 yrs ago. It did a lot of nerve damage that included my ability to hold my urine or even my bowels. I have been the guinea pig for all the lastest gadgets by my Gynecologist. NONE of them worked. To this day, I basically have a 1 minute leeway to get to the toilet before I literally start to pee. The same goes for my bowels. This is because I do not have muscle control to hold it in. My question is doe's anyone have any advice to help strengthen nerve damaged muscles??