So i had sex with a mommy for the first time over the weekend.

To be honest, I was kinda expecting it to be different, but I couldn't tell that she had a kid. I guess I was expecting her vagina to be the size of a watermelon or somethin which looking back seems pretty ignorant. So for the other guys who have been with moms (and any moms out there), have you encounted the same thing, i.e. that you really cant tell whether a woman has had a child or not?
The girls kid is like four so maybe that matters too.