I wouldn't be against the idea of an abortion, and even if it is a life, at the moment it's no more sentient than the rabbit you might stew. If it's preventing a life from happening that is your moral objection, having a child when you aren't ready, is preventing the life of a baby you would probably have when you are better established to provide a good home to later on, and that child would have a better life, therefore, by utilitarianism at least, it is not only morally palpable, but imperitive. Especially when you factor in the possible negative (if it's unwanted) effects that having a child when you are not ready will have upon your life.

Don't let the bible bashers dissuade you from doing what you think is right.