What Are Progestin only Birth Control Pills?
Birth control pills help keep you from getting pregnant. The pills with only progestin come in 28-day packs. Every pill is active. Each has only progestin, and no estrogen. These types of birth control pills are used for women who have medical reasons that prevent them from taking a combination oral contraceptive pill (pills that contain progestin and estrogen). Women who take progestin-only pills may:
- Have migraine headaches
- Be breastfeeding
- Have a history of blood clots
Progestin-only pills are very effective if taken correctly.
Progestin-only pills work by making your mucus too think for sperm to move through.
How Do I Start Taking Progestin Pills?
You may start taking these pills any time in your menstrual cycle.
Protection from pregnancy begins after 2 days. If you have sex within the first 48 hours after your first pill, use another birth control method (condom, diaphragm, or sponge). This is called backup birth control.