The original question in post 78 was “So Adam and Eve already had children before the fall?

”
The answer was a simple no.
I chose a biological approach to the beginning of Genesis 3: 16 as a clarification of my no. This approach is because in the beginning “God created man” … with the specific characteristics that “(II) in his own nature he unites the spiritual and material worlds;” (CCC 355) The biological approach to human nature is that the anatomy is material. It is the soul which is spiritual. Genesis 1: 27
Because there were no additional women before the Fall, the comparison to Eve’s material anatomy which gives birth had to be a material animal. I chose a cow because “today, there are veterinarians specially trained to work with female farm animals.”
Both animal anatomies and Adan and Eve’s anatomies, being material, would naturally decompose until death is achieved. This natural change or simple genetics can affect the process of giving birth.
Animals did not receive the preternatural of gift of immortality. Therefore, Adam and Eve could observe pain and death. Going from zero pain to possible childbirth pain could be considered an intense proposition.
I agree that today, the beginning of Genesis 3:16 does sound like Eve having previous material childbirth. But that does make sense when one considers the whole context involved with the first two humans. “God blessed them” Genesis 1: 28. No pain, no death is certainly a blessing since Adam and Eve started out with natural human physical/material anatomies. With the inclusion of the spiritual soul, that is the human nature which has been passed on to us.
A careful reading of CCC IV. Man in Paradise, paragraphs 374-379 and 399-400 will explain the preternatural gifts and their disappearance.
Also try this link.
therealpresence.org/archives/God/God_013.htm
"Bodily immortality is the converse of mortality, i.e., the possibility of separation of soul from body. Adam was therefore capable of not dying. Yet the gift was
conditional, provided he did not sin; it was
gratuitous, since Adam’s nature by itself did not postulate this prerogative but came from the divine bounty; and it was
participated, since only God enjoys essential immortality."