Arguments for pro choice?

I was subjected to some right wing talk show. Listening to this woman get smashed to bits for believing that a woman’s body is hers and she has a right to her what happens to her body.

I of course started thinking about what arguments I would present. But when it gets to the nitty gritty of how could kill something with a heartbeat and it not be murder… why draw the line at 5 month why not nine months? Or hypothetically it was consensual..Why not just take proper precautions, etc?

Well I know my reasons. And this is an over discussed topic no doubt on Fluther. But will you humor me and tell me your response?