First of all, I'm not a Christian so this isn't coming from a religious perspective.
Second, Just because an unwanted child is not my responsibility doesn't mean it's still not ending a human life. Don't have unprotected sex if you're not ready to handle the responsibility of your own actions. Futhermore, calling it a tumor is not a relief of responsibility, let alone guilt, it's a disgrace to nature and life itself.
Oh unprotected sex is the only reason someone can get pregnant?!? Got it.