1) What are your reasons for drawing the line of "everyone" at conception?
2) Roughly half of all fertilized (that is, conceived) eggs fail to implant on the uterine wall, and thus never develop into a full-scale pregnancy. If you believe that everyone conceived should have the right to life, are you supporting or advocating for medical research to find out why fertilized eggs fail to implant and to remedy that situation so that all fertilized eggs will have a chance at life?
3) Greater access to birth control and comprehensive sex education would certainly decrease the number of pregnancies that are unwanted, which would in turn reduce the number of unborn children that don't have a chance at life (and numerous studies have shown that birth control reduces poverty as well). Are you opposed to the elements of the pro-life movement that push for limiting access to birth control and advocate abstinence-only sex education?
4) If it were the case that making abortion illegal didn't significantly reduce the number of abortions that women get, but did significantly increase the number of women who died (along with the fetus) from dangerous illegal abortions, would you still say that attempts to make abortion illegal are "policies that protect unborn children?"
5) Try to play along with this hypothetical scenario. Let's say there's a woman who conceives (we'll call that fetus "Jim") at a time when being pregnant or raising a child would completely derail her career and severely limit her earning ability for the rest of her life (just to simplify things, let's say she was using birth control, but it failed). If she doesn't get an abortion, she'll be raising Jim somewhere around the poverty level. If she does get an abortion, she can get the momentum going in her career, and then when she conceives again later (let's call that fetus "Joe"), she'll be able to provide a much better quality of life for her child (whereas, if she keeps Jim, then she doesn't have another kid because she can't afford it). If you're opposed to abortion, aren't you really saying (within the framework of this very specific scenario, granted) that Jim has a greater right to life (which would only be a life of poverty) than Joe (who would have a much better quality of life, in monetary terms, at the very least)?