The RCC Magisterium has never taught that Personhood begins at conception, and Pope Francis

stated wrt fetal Personhood..."...I do not say a person, because this is debated..."...Also, other faiths believe Personhood begins at "Quickening"...or Birth.

Then there's the fact that 60% of fertilized ova cease development before anyone could tell they existed, plus another 10% result in miscarriages...and the RCC has no theology for those real world occurrences.

Let's not sacrifice women's rights as true Persons for a incomplete concept.