And at that point it isn't a foetus, it's an embryo. Not aiming at you but the Religious fundamentalists tend to be rather sloppy with science, and reality.Not entirely correct. It depends when it is done following conception. The bulk are done within 10 weeks which involves 2 pills. Same sometime a little later. Babies may checked for genetic and other syndrome problems shortly after 10 weeks. Other factors may show up later. A mother may develop problems.