The woman goes through a physical exam and pregnancy confirmation. The process cannot be done if it is more than 49 days from the start of her last menstrual period. Once the pill is taken, there is nothing that can stop the process. The pill begins working to block the body's progesterone receptors in the uterus. Without progesterone, the pregnancy can't continue.
Progesterone makes the uterus lush and thick, the ideal environment for the developing baby.
There is a two-day waiting period after the first pill is given. I f the woman is still pregnant, she must return to take a second pill. The woman takes a second pill, Misoprostol, a prostaglandin that causes the uterus to contract and empty. The woman will experience heavy bleeding in as little as a few hours or as long as a few days. The pill runs its course in about a week's time.