What's also amusing is that the premise of the thread fails as a false dilemma fallacy, as well as exhibiting the OP's ignorance of the law.These "what if..." political scenarios amuse me.
The thread author is confusing criminal law with regard to procedural due process, such as murder and the death penalty, with that of civil law and substantive due process, such as the right to privacy prohibiting the state from interfering with personal, private matters.
Consequently, that the state would refrain from executing a pregnant woman has no bearing whatsoever on the right to privacy and the right of a woman to decide to have a child or not pursuant to the privacy right.
Indeed, for the state to execute the pregnant woman would be for the state to deny the condemned her right to substantive due process, having nothing to do with the embryo/fetus.