I hope this all remains civil. I personally do not believe in abortion, but if you fear this unplanned pregnancy will ruin your health, abortion may be the right option for you. As long as you feel you can handle it emotionally, you need to do what is best for you.
And to add more than my 2 cents....If you plan on never having kids then maybe having your "tubes tied" would be good option to prevent (better than any other birth control beside abstinance) any further unwanted pregnancies.