How exactly is a pro-life sentiment incongruent with civil liberties?
The question really boils down to whose rights should trump: mother to be or child to be. Pro-choicers usually rely upon corner case hypothetical situations in an attempt to justify their position, but that approach wholly ignores the civil liberty issue you bring up. Somehow it's a violation of civil liberties to insist the government step in to protect those who cant protect themselves? I'd wager you're a big fan of the government propping up unions to protect the helpless workers from big-bad-wolf corporations.
Before you throwing out the "fetus isn't a person" argument, think about it for a second; it's the same inane mental word gymnastics that allow people to convince themselves there is a difference between being "detained" and "arrested" (or being locked in a room from which you are unable to leave isn't REALLY even being "detained").