Injury After Hernia / Diastasis Repair?

Even if you had not had surgery, a kick to the gut would produce swelling and pain. The only way to determine whether the injury has undermined the repair would be to see your doctor in followup. You would not be able to detect a ruptured suture but, if the repair was compromised, after the swelling goes down, a midline bulge might be palpable.

Probably the kick from your son did not cause permanent damage.  When the swelling subsides in a few months your surgeon should be able to determine if your diastasis repair is intact. Good luck.

There is no way to tell by your description whether or not the repair has been disrupted.  It is not very likely at 2 months after surgery, but not impossible and only time will tell. Diagnostic tests, such as a CT scan or an MRI, are of limited value. The presence or lack of muscle bulging wil answer the question.

There is little, if anything, that can or should be done at this point.  See your surgeon if you remain concerned or if swelling and pain persist.  Good luck.