Most things will either repair themselves or are able to be fixed.
I had 5 ' fingers' of stomach muscle separation plus pelvic floor issues.
I saw a physio who specialized in continence for 6 months after DS2 was born and we tried all sorts of stuff before finding that one side of the muscles were "gone, they seem
To have torn away" even then she said they could grow?
Even still it can be fixed with surgery, I'm just waiting til DS2 is older.
She told me to be sure I'd finished having kids because to have anymore after surgery would mean elective c-section.