All hormonal birth control has an abortifacient mechanism that thins the endometrium (uterus lining) which causes any newly created human to die. Research shows this deathly mechanism may be the mechanism working around 70% of the time or more.😳 🚨: In the ‘60s the medical world obfuscated "fertilization" & "conception” words that historically meant the same thing. So now "conception" is used as a synonym for "implantation" - which is when a human zygote implants in the uterine wall, usually days after fertilization.