Please at least read the information in the first article I linked to above. The 'morning after pill', sometimes called 'Plan B', does not affect implantation. It prevents/delays the ovary from producing an egg at what may be an extremely inconvenient or stressful time (forexample, after a rape, or aftercoercive intercourse of any kind)for an individual woman.

Bad enough that many want to restrict women's access to reproductive control alternatives, worse that they try to use the public's general ignorance or misapprehension of human reproduction to further their aims.