Definitely follow up with the doctor (you need to do so anyway after a surgical procedure).
I hunted around in other message boards and found a discussion on this subject. Here is what one person said:
"Take heart - my issue did go away.
I was told it was related to where they position - and ground - the cautery instrument that zaps blood vessels during surgery.
It took maybe a year for it to completely dissapear, but it did."
I hope that offers you some kind of explanation and encouragement.
You should follow up with your doctor to ensure there isn't any nerve damage.