When people say "my body, my choice", they claim it also has to do with the baby growing in their belly.
The reality of how it works is that an egg gets fertilized, and then it sticks to the side of the uterus, and begins to grow, and the placenta is stuck the uterine wall like velcro, and the baby is swimming around in the sack, with the umbilical cord sticking to the placenta, so, no, the baby is NEVER the same as the mom! It's a separate entity, it's own being!
The only real choice that has to do with the woman's body is if she has sex or not.