Information please

I have a temporary sacral nerve stimulator fitted to help with my bowel problems.  Really not sure if this is helping or if its hitting the right nerve or just what I am supposed to feel.  If anyone has one fitted and info given would be greatly appreciated.  I have this one for 2 weeks and then I will have on implanted if it has worked for me.  Heres hoping theres someone out there that has been through this.  Many thanks