I believe that a woman herself has the right to decide whether to have an abortion or not. An ultrasound of the fetus up to 12-18 weeks of pregnancy shows that there is not yet a person. But with a later pregnancy, the formation of the child already begins. Abortion during this period is already considered a murder.
Murder is the killing of one human by another.
A fetus cannot be considered a human any more than a fertilized egg is considered a chicken. If people really were concerned about murdering parasites, women should be forced to take a pregnancy test before drinking. A one day or one week fetus would be destroyed by a night of drinking.
Once the fetus has a chance of surviving outside the womb, then it can be considered a human.