It’s actually the most effective way to prevent pregnancy after sex. Another great thing about using the copper IUD as emergency contraception: you can keep it and have really effective birth control that you can use for up to 12 years. The other kind of emergency contraception is the morning-after pill. You can take it up to 5 days after.
Non-nursing moms: If you're formula-feeding your baby, you'll probably start menstruating one to three months after delivering your child. If you don't get your period by three months postpartum, talk to your doctor. She may want to check for secondary amenorrhea (that's when women with previously normal cycles don't have a period for three months), pregnancy, or other issues.