When Does Your Period Come Back After Birth? (And Can You Get Pregnant Before It Does?)

There are two different things people mean by “bleeding after birth,” and mixing them up is how surprise babies happen.

First: the bleeding right after birth isn’t your period

What you get in the first weeks is lochia, the uterus shedding the lining from the pregnancy. Cleveland Clinic says it usually lasts up to about six weeks. It’s covered in how long does postpartum bleeding last? Your actual period comes back after that, on its own timeline.

If you’re not breastfeeding

MedlinePlus says your period is likely to come back four to nine weeks after birth. The NHS says it can start as soon as five to six weeks after birth if you’re formula feeding or mixing formula with breastfeeding.

If you’re breastfeeding

MedlinePlus puts it at three to twelve months. The NHS says that if you’re fully breastfeeding, your period may not return until you start breastfeeding less: dropping night feeds, starting solids, or adding formula.

The reason, per the NHS: the hormone that makes milk can switch off the hormones that run your cycle.

The part nobody believes until it happens

You can get pregnant before your first period. The NHS says as soon as three weeks after the birth, even if you’re breastfeeding and your periods haven’t come back. You ovulate before you bleed, so the first warning you get might be a positive test.

The NHS advises starting contraception within 21 days of the birth if you don’t want to get pregnant again right away. Bring it up at a prenatal visit, before the baby, so it’s sorted by the time you need it. You will not want to research birth control at week three.

What the first period is like

It varies from person to person and from cycle to cycle while your body settles. If something seems off, like very heavy bleeding or bleeding that won’t stop, the bleeding lines in postpartum warning signs still apply.

Follow-up questions

Is the bleeding right after birth my period?

No. That's lochia, the uterus shedding its lining after pregnancy, and it can last up to about six weeks. Your actual period comes back later, and when depends a lot on how you're feeding the baby.

Can you get pregnant while breastfeeding before your period returns?

Yes. The NHS says you can get pregnant again just three weeks after birth, even if you're breastfeeding and your periods haven't started yet. Talk to your provider about contraception before you need it.

Why does breastfeeding delay your period?

The NHS explains that the hormone that drives milk production can stop your body making the hormones that control your periods. That's why fully breastfeeding tends to delay it longest.