Hey, no worries Rachel. Same thing here, except I am only 9 months out, if that. I get stabbing/burning sensations all over my head, not just at the incision site... and they HURT...
I have not had it checked; had a craniotomy in March to have a brain tumor removed. The good news is that the pain comes and it goes... so at least I get a break in between.
Did you ever figure out what was going on with you?