It's not your body, a pregnant woman doesn't have 2 heads, she has one, her baby inside her has it's own seperate DNA, seperate bodies and a seperate future from her mother.
What's the difference between killing an unborn and a newborn, a newborn depends on a mother to survive, a newborn is still developing and a newborn does not have much knowledge / awareness. The only difference is a newborn is breathing, but that doesn't give their life value. What's the difference between abortion and killing a child in a coma, a child in a coma depends on a hospital, is not aware, the only reason you don't kill a child in a coma is if that child has a good chance of escaping a coma, do you get my point? Once a child has a future, it is valueable.