The Mini Pill
Best if: You're breastfeeding
How it works: This progestin-only pill works by thickening cervical mucus to prevent fertilization and reducing ovulation. You take an active pill for 28 days, so you receive a continuous flow of hormones.
Drawbacks: You need to take it at the same time every day within a two- to three-hour window or you risk getting pregnant. The mini pill causes more irregular bleeding than combo pills do, but it usually tapers off within a few months.
Fertility returns 1 to 2 months after going off the pill.