The term "post-pill" can refer to emergency contraception, often referred to as the "morning-after pill," which is used to prevent pregnancy after unprotected intercourse or contraceptive failure (like a missed pill). The morning-after pill does not terminate an existing pregnancy. Instead, it works by delaying ovulation, preventing fertilization, or preventing a fertilized egg from implanting in the uterus, depending on where you are in your cycle.
In contrast, an abortion refers to the termination of an existing pregnancy. The morning-after pill is not considered an abortion method. If you have concerns about contraceptive options or pregnancy, it's always best to consult a healthcare professional for personalized advice.