If we conclude that the fetus is a person worthy of the right to not be aborted, does that then give us the right to force the mother to bring it to term? Better yet, how the heck would you force a woman to bring a fetus to term? You and I both know it's next to impossible to enforce, because it's her body. There are any number of ways that she could harm/kill the fetus, which are perfectly legal. Woops! I accidentally fell on my stomach! Oh and look the fetus died.
Mooby your fatal problem here is your complete lack of consideration that the fetus is a parasite on the mother, and not an independant person. It does not become an independant person until it is born. We don't force a mother to give a dieing child her left kidney, and we don't force a mother to allow a fetus to parasite off of her. Once you figure out how to beam the baby out of her and into an incubator, then you can reasonably pursue the angle that all fetus' deserve a chance at life. Until then, you are on very shaky ground indeed.