Menstrual regulation has a long history in the United States where, for centuries, women have used a wide range of herbs and medicinal teas to “induce” or “bring down” a late period when they did not want to be pregnant. Today, period pills—also known as “missed period pills” or “late period pills”—are medications that you can take if your period is late and you suspect you’re pregnant—but don’t want to be. Advocates believe period pills can help avert the negative consequences of new abortion bans, now in effect in over a dozen states across the country.