I myself am split on the issue, as I see arguments both ways.
The fetus is in the creation process, and is not yet a human, it’s raw material owned by the mother and in 9 months depending what health she keeps her work in creates a final product, but til then the mother owns the womb and the materials that are creating
Hm, but it may be removed and be grown into a new person. Does this mean that we have created a new human being out of nothing, pure raw materials? No.
She can refuse to eat. She can commit suicide.
Aha! Now that is interesting! Her being required to keep the baby alive violates her self-ownership right! Quite nice, quite nice.
She can remove it without harming it
I’ve considered this before. Can she really? Because it’s not a longshot from there to say that a mother may neglect her child the same way (not feed it). And unless we are willing to go into that territory (which I wouldn’t mind discussing, mind you), then this argument is not correct.
Consent to sex=/= consent to conceiving a child
Hm, that is a good point, because a woman might not know of the sex/child relationship (I know, odd). That brings in the question of whether political theories should take into account “common knowledge” or not. Yet again, if we extend this reasoning, we may say that having a child =/= consenting to feeding it etc.
An interesting point to consider:
Imagine you are a mother and have a fetus, but for the sake of argument, it grows in a glass jar (and you can all see it, to make this more vivid). No, someone comes in at night and poisons the fetus and then stabs it. Cameras catch the guy, he admits to it, he obviously and undeniably did it. Now, what is his charge? Murder or mere violation of property (“raw materials”, eh?)? To spice this up with some rhetoric, the mother had a dream of a bright future for this pile of flesh which would eventually become a person with hopes and aspirations.
This is not to be taken as a definitive argument against abortion, just something to think about.