I think even with a c-section, they cut the muscles, how else would they get in? I had surgery on my uterus and I have what looks like a c-sect scar too. Just exercise (cardio) and sit-ups should help. Just to let you know it took my body about a year to heal from the swelling from the surgery. I looked deformed in my tummy area for a while. Now it's getting better. So yours should too! I actually have had 3 surgeries through the same incision and my tummy is as flat as it was before. It might just take some time, good luck!