The post-birth belly bulge is common -- diastasis recti (DR), the medical term for the separation of the abdominal muscles, occurs in 37 per cent of women who have one pregnancy and 67 per cent of those who have multiple pregnancies. Still, that doesn't make it less distressing for women, both physically and psychologically. I did not enjoy looking pregnant when my baby was very much outside of my body and already starting on solid foods.