Obviously he ment before it has become an infant. Possibly fetus or maybe earlier.
I wouldn't want to force someone into labor against their will, people have rights. You may argue that the fetus is a person and has rights ( I almost feel bad for bursting your bubble, but you're wrong. A fetus is completely dependent on its mother, and does not have any comprehension of itself or its surroundings. It doesn't care if it dies or not.)
Being pro-life means you will willingly force a woman to go into labor, and often the baby will live a bad life because of the mothers poor decisions. That is all-out wrong. If it will obviously suffer for its entire life, I would feel good putting it to an end before it could realize itself.