Period Pills for Menstrual Regulation: A New Reproductive Health Option

The Period Pills Study is a prospective observational study among people who decide to use a combination of mifepristone and misoprostol for menstrual regulation.

Inclusion Criteria: * Be 18 years old or older * Read and speak English * Know the date of their last menstrual period within 2 days * Have a period that is late by up to 21 days * Must have had regular periods in the last 4 months * Does not want to be pregnant * Does not want to verify pregnancy status * Understand that if they are pregnant, the pills will end their pregnancy * Does not have contraindications to mifepristone and misoprostol (Risk factors for ectopic pregnancy; history of bleeding disorder or anticoagulant therapy; history of chronic adrenal failure, long-term corticosteroid therapy; allergy to mifepristone/misoprostol/prostaglandins; history of hemorrhagic disorders or anticoagulant therapy; history of inherited porphyrias; has an IUD; currently use a contraceptive implant or injectable) Exclusion Criteria: * Under 18 years old * Does not read and speak English * Does not know the date of their last menstrual period within 2 days * Has not had regular periods in the last 4 months * Wants to be pregnant * Wants to verify pregnancy status * Does not display understanding that if they are pregnant, the pills will end their pregnancy * Has any contraindications to mifepristone and misoprostol (Risk factors for ectopic pregnancy; history of bleeding disorder or anticoagulant therapy; history of chronic adrenal failure, long-term corticosteroid therapy; allergy to mifepristone/misoprostol/prostaglandins; history of hemorrhagic disorders or anticoagulant therapy; history of inherited porphyrias; has an IUD; currently use a contraceptive implant or injectable)