A.M.
Depending how severe your diastasis recti is (how separated your muscles are) physical therapy might not help. I've had 3 babies and had almost a 5 finger separation. I tried physical therapy but it didn't work. I ended up having a tummy tuck and am so much happier. Back issues were lessened as well (I wasn't aware how connected one issue was with the other). In my case, I paid for the surgery and did the smart thing with going with a plastic surgeon. I know that in today's economy and maybe to alot of people it may have seemed very superficial and vain thing to do but I did everything I could first but nothing helped. I used to look like I was 6 months pregnant all the time. Unless you're in that situation, you can't tell anyone that that's the way your body naturally ends up after childbirth.
Good luck!!