If there is no egg, there is nothing for sperm to fertilize. [substeps] If you are close to ovulating or have just ovulated, the pill has a significantly smaller chance of being effective.
[header] How to use the morning after pill [title] Understand how the morning after pill works. [step] Most morning after pills are formulated with a synthetic version of the hormone progestin (also called levonorgestrel). This hormone works by keeping your ovary from releasing an egg.