Hi Tara I agree very very strongly with what Lessa has said.
I have a neuro stim also, I have had mine for 8 years. You shouldnt have to go to neuro doc again. I doubt very much there is something wrong with your brain and as far as I know all of us who have stim implant can NOT have an mri so how much can this new visit with a neuro really help..it can only help fatten the pocket book or wallet of the neuro and your doc that is trying to make you go. when there is an issue with the stim it is the reps duty and responsibility to fix. I would go to the stim rep guy ! go with your gut just like lessa has said. The leads have probably slipped and need adjusting that is it !! It is highly unlikely there is anything at all wrong with your brain .
btw I got my stim after bad accident where trailer truck hit me from behind while I was stopped in school x-ing zone behind other cars. we have some thing in common and I am glad to meet you and hope to get to know you better. Very sorry that your dealing with such pain tho I know you will find this place helpful. If I can help please let me know.
PEACE
BMW...Tina

EDIT TO ASK WHEN YOU FEEL DID YOU HIT YOUR HEAD AT ALL????????