M.F.
It's called diastasis recti. I had the same thing after 3 c-secs. It was so embarrasing. A pouch is one thing--looking 4-6 months pregnant is another. Anyway, it is a separation of the abdominal muscles. Because the muscles are actually separated, doctors say they can't be brought back together via exercise or anything else other than surgery (although I did find a couple of resources online that said there were exercises that would work--they did not for me and many other people I read about. Most resources said that exercising may actually make it WORSE if you do the wrong exercises). There is a test you can do yourself to see if yours is diastasis or not (involves laying on your back and feeling for a space between your abdominal muscles). Let me know if you can't find it and I can find it again for you, if you like.
Google it and you'll find a ton of info. And check with your OB--she can give you info also. Best wishes!