It could be completely normal - when the nerves re-knit the sensation is like burning or stinging. Hurts like nothing else.

I experienced it irregularly up until about 4 months after the surgery (and even now get mild twinging from time to time), and was told that it is possible to experience it for up to a year. I experienced it at different points along the general area of the scar (including slightly above or below). It generally starts and stops quite rapidly. Does it come and go, or is it a sustained or worsening pain?

I would definitely be getting checked ASAP to preclude infection. I had a mild external infection which happened about 10 days after I gave birth and when I contacted the hospital was told to see a doctor immediately.

Hope you're feeling better soon hon.