Hi Kristin
I had a c/s in nov last year and I still have that numbness. The feeling comes back, but slowly.
The nerves in that part of your belly have been cut and damaged...they grow back on average about 1mm a year apparently...However, the more you touch it, the faster they will grow back.
I still use my stretch mark oil on my belly every night and the sensation is slowly coming back, it will take years though for it to return to normal, if it will come back completely.
So hang in there, it is more than normal, and your body will take many years to heal itself fully after such a traumatic event.

Congratulations on the birth of your little girl too
HTH
Lex