First of all, you don't have to understand the difference between an ovary and an egg and a zygote and an embryo. Life does NOT begin at conception regardless of what the forced-birthers would have you believe. Both the sperm and the egg are live human tissue that have the potential to become a human being assuming all the right conditions are met. Trying to ascribe some kind of abstract spiritual meaning at some specific point in the reproductive process will never be anything more than an arbitrary and capricious attempt to make some kind of half-fast emotional argument into something resembling reason, but utterly fails in that regard.
Next, abortion is a viable medical procedure and just like every other viable medical procedure is nobody's business except the patient and the doctor. No matter who says it, the idea of making abortion "safe, legal and RARE" is nonsense. The only consideration worth a bucket of warm spit is making abortion legal. It's already safer than the alternative and abortion needs to happen as often as the patient and doctor decides it needs to happen. The legal roadblocks to abortion are already far too many and completely unnecessary and their attempt is simply to insert government between the doctor and patient relationship where it has no business in the first place.