Women should have control over their own body, but if they had consensual sex in an attempt to have a child, they are not justified in killing their unborn child because they changed their mind. Your comment is proposing the statement that a woman's decision to not have a child after intentionally getting pregnant is greater than the life of an unborn child, and your main justification for this is that fetus can not breathe yet. However, fetuses do have some level of consciousness. Although this consciousness is very basic, uses very broad stimuli, and is not close to that of a born person, there is still consciousness. There is not much evidence supporting the idea that fetuses can feel pain, but there is no evidence that fetuses cannot feel pain. In addition, fetuses can receive oxygen in their own unique way rather than breathing by receiving oxygenated blood from the mother. This is also the same way that fetuses receive nutrients. Also, fetuses have beating hearts. This means that fetuses have both the ability to receive oxygen and the ability to distribute oxygen to organs through the use of a heart.