Question

Emergency contraceptives may prevent pregnancy if used within 72 hours of _________.

• A. Menstruation
• B. Ovulation
• C. Coitus
• D. Implantation

Answer 1

The correct option is C

Coitus

Emergency contraception must be used after coitus within 72 hours to prevent pregnancy. It prevents pregnancy by temporarily stopping ovulation. Sperms can live inside the uterus for 2-3 days, a maximum of 6 days after coitus. If ovulation is prevented during this period, fertilization and hence pregnancy can be prevented.