diastasis recti caused by C-section?

Bekah

I had a C-section on the 16th of February due to my son being frank breech. Surgeon stated during the surgery that my abs never separated during pregnancy and he was sorry he had to do the surgery on me. Now 16 days post operation, I have the worst back pain and absolutely no muscle ton. I self checked and I have four finger separation that seems to be diastasis recti. Is this normal as with a C-section? Will it heal on its own? Or will I now always have the C-section self, back pain, and weak abs? Is there anything I can do to help healing? I know I can’t exercise till 8 weeks post operation.