Aside from all the women's rights issues, this would also be a nightmare for people going through IVF. Current practice is to harvest and fertilize 10-20 eggs and then cryopreserve those that show normal development after a couple of days, implanting just one and keeping the rest on ice for future implantation. Under a life-begins-at-conception law, what do you do with these other embryos? Are you required to preserve them forever? Or use them all? Or do you have to fertilize eggs one at a time till you get a viable one, making the IVF process much longer and vastly more expensive?