I still think that's a disguised query. Whether a fetus is a person is a separate question from whether a woman is obligated to not endanger it. For instance, protected species of animals are not people, but we are legally obligated to not endanger them in certain ways. Convicted murderers on death row, enemy soldiers at war, and people trying to kill you are considered people, but in some situations involving such people, there is no legal obligation to not endanger them.

I can consistently think a fetus is a person, but that there should be no requirement to not endanger it, and vice versa.