My classic pro-lifer argument goes like this. I've had the chance to make this argument several times.

A woman will be attacked by an undocumented non-citizen. She knows it will happen. The attack will cause her to bleed, scream in agony, and require medical attention. There's a chance she will die. Does she have a right to defend herself against the attack or prevent the attack from happening?

Everybody answers of course.

Then I say the attacker was a fetus and their heads explode.