Too late for vitamin E oil put on the scar.
I had a C-section 26 years ago. I don't have the exact same symptoms you do except for the numbness right on top of the scar and to either side. Of course there was nerve damage --
I will have more "pain" with it when I'm overweight and my stomach sticks out -- there was muscle damage there too. I wonder if this is like "phantom" pain people experience when they've lost an arm or a leg..... nerves still thinking there's something there?
My suggestion is to find a female OB/GYN and talk to her.
I had a hormonal problem after menopause and the male doctor "just let me go off hormones" knowing full well the ramifications. The female doctor I went to two years later because of painful intercourse, told me he should have been shot and knew full well what would happen. I've been treated successfully....