Just one point to add, not all births are as you describe, I had a friend that had 3 contrations and gave birth to her 5th...she was in the bathroom washing up and felt pressure, yelled at her husband to go get the next door neighbor. It didn’t take lone for him to run next door and when they got back home, she had given birth and was in bed with her newborn...She was the Vicar’s wife of a small church...there really are some strange births, there are some that are quite unusual...But the hymen is broken unless its a C Section which the Jews did not do...
Fast forward 2 1/2 years, she's in her first contractions with me. Father rushes her in the car to the hospital, up the steps (the hospital had steps then, in 1951), my mother slumps to the floor and --- in her words, I "slipped out like a peeled grape."
:o)
I gotta smile even now.