The answer to that depends on whether you’re breastfeeding or not. If you’re not breastfeeding, your period could come back about six weeks after delivery, maybe even sooner, says Laura Riley, MD, the director of labor and delivery at Massachusetts General Hospital.
If you’re fully or near-fully breastfeeding, it may actually take months to return. According to Riley, it varies a lot from mom to mom—some nursing moms get their period earlier, while some get it when baby starts feeding less and eating solids more, around six months. And other moms don't menstruate until they finish breastfeeding altogether.
Here’s the real shocker though: Even if you’re not getting your period, you can still get pregnant. Repeat: you can still get pregnant! That's because you could ovulate (release an egg) well before your menstrual cycle returns and that's all a sperm needs to get its babymaking job done. So if you’re going to have sex—and don’t want another bundle on the way so soon—use contraception every time. (Don’t say we didn’t warn you.) And lastly, keep in mind that Riley says you'll lower your risk of having a pregnancy with complications if you wait at least nine months postpartum to conceive again. Another good reason to use protection right now.