Just to weigh in my two cents.
I am not remotely religious. I am also pro-choice.
That said, early in our marriage my wife had a miscarriage and the fetus was lost. It had progressed far enough that the doctor was able to tell us that it was female.
I know that legally it was classified as a fetus and as such had no legal standing, but there is so much of a difference between having no legal standing and not being alive.
To me, I see no difference between those that lack any compassion towards those that lose a child in the womb because it doesn't suit their political agenda and those that try to deny women the right to choose. Both insist that their own narrow view should be painted across all people.
I do not envy any women that needs to make such a choice. While some use abortion as a form of birth control, and cases like that sadden me, it is not the measuring stick for the issue at large. A pregnant woman is a complex legal entity, a line needed to be set for when the rights of the child will supercede the rights of the mother but that is the issue, legal definition.
There is such a difference between when a fetus is recognized legally and when it is alive. To a loving couple, it is alive from the moment they learn of it. It is a baby and their child and the loss is traumatic.
Pro Choice does not give you the right to decide for others when they should feel a fetus is alive. Those that view the growing fetus as a child or baby are using their choice just as much as someone considering abortion.