I have had 3 c-sections and can tell you that the numbness may be permanent, even the sensitivity, I dont have pain but a different kind of sensation near the numb area. I also dont feel when I have a full bladder anymore and fear this may be permanent and has only occurred since my third section. You will get used to the numbness, it may get a little better but more than likely it will remain numb indefinately. Its very normal but if you are concerned, see your gp.