The Church teaches that abortion, the deliberate killing of an unborn child, is always wrong.
In certain rare circumstances the situation of the unborn child poses a certainty of death for the mother, such as ectopic pregnancy. In this situation, a procedure that is performed on the mother with the intent of saving the mother’s life may have a secondary effect of killing the child. Such as procedure is permissible, provided the death of a child is strictly a secondary effect.
It is not permissible to perform any procedure designed to kill the child, even when there is a claim that the child has to be killed to save the mother’s life. There are virtually no situations in which such a thing is necessary anyway.
With regards to rape and incest, I know the situation is a difficult one, particularly for the mother of the new child. If we were dealing with anything other than a human person then the destruction of the product of an evil action could possibly be warranted. We are, however, dealing with a new human life that was **created **by and is **loved **by God, and is who wholly and completely good. How great is our God that he brings such goodness out of such evil!
So, while the woman is pregnant as the result of an evil act and she is now seriously imposed upon by this new life, I think it helps to remember that we are now dealing with a human life that can’t be killed just because he or she came into the world through undesirable means. The new child deserves and has a right to life, and ought to be a source of great joy to the woman, who will hopefully rejoice that God has brought such good and such beauty out of her suffering and denigration.
No, I do not think you are pro-choice, I just urge you to be completely and wholly pro-life, more so than you already are. I am glad you are asking honest questions and please always replace in your mind the word “abortion” with the words “deliberate killing of a human child.” That helps me in those tough scenarios.