It is not a woman's burden to support another person, with the risk of great bodily harm to herself, without her consent

Ever. She is free to withdraw that consent at any time.
This position recognizes at least in theory that a woman should have to consent to being pregnant, but it implies that just because a woman becomes pregnant that is somehow "consent."
No! People can have sex just for enjoyment, we live in a free society. The insinuation that having sex automatically means you want to get pregnant is sexist and rooted in a backwards ideology that women only exist to bear children. Women should have total control over their bodies.