Period While Breastfeeding: Missed or Irregular Periods 149

With my first two children, despite breastfeeding exclusively and co-sleeping, my menstrual cycle returned about a month after delivery and remained on a normal cycle thereafter. So, when after my third child my period resumed and then suddenly stopped, I was admittedly a bit scared I was pregnant again despite always using protection. Upon attempting to research why exactly this would happen, all that could be found were forums, lots and lots of forums, that required a lot of reading to find even half answers. I decided to combine this info with some information from my mid-wife to provide answers for others who experience an irregular period while breastfeeding.

When should your period while breastfeeding resume, if at all?

When your period returns while still breastfeeding depends largely on how often you breastfeed and your personal hormone balance. According to the lactation experts at the La Leche League, on average those who exclusively breastfeed don’t have a period while breastfeeding for 14.6 months.breastfeeding period, period while breastfeeding

-About 7 percent of women experience a period within the first six months postpartum
-37 percent within seven months to a year
-48 percent during the second year
-Only 8 percent exceed year two, likely from the introduction of solid foods

These percentages are not accurate for those who supplement with formula or introduce solid foods within the first year. The general rule is: the more a baby nurses, the higher the chance there will be no period while breastfeeding.

What might cause a period to resume faster while breastfeeding?

Your period is more likely to return sooner after birth while breastfeeding if:

-You aren’t exclusively breastfeeding
-You’re bottle feeding at times (even if breast milk)
-Your baby sleeps for long periods at night
-There are complications that make breastfeeding more difficult
-You’re a first-time mom
-You have a higher BMI
-You’ve opted for hormonal birth control such as the “mini pill”

Are irregular periods normal while breastfeeding? Can menstruation stop and then start again as a result of breastfeeding?

Yes. You may experience irregular periods or spotting as a result of variances in the hormones released while breastfeeding. This could be a result of a decrease in nursing from, say, a sickness in your baby, teething, getting a sitter, or just changes in appetite. This is why some women may have a first period after delivery, and may even start having a normal period while breastfeeding, and then stop. Your own hormonal balance prior to breastfeeding may also affect how your cycle functions while nursing. This explains why in two previous pregnancies I had experienced a period while breastfeeding, but not with the third, my third baby was a piglet–always nursing.

Unfortunately, thanks to the volatile nature of hormones while nursing, there is no “normal” menstrual cycle while breastfeeding, but that also means there is no abnormal.

Why wouldn’t my period return if I stopped breastfeeding already?

If it’s been more than 8 weeks since you stopped breastfeeding and your period still hasn’t returned, there’s likely an underlying hormonal imbalance. This may be a result of a medical condition such as postpartum thyroiditis or PCOS. Lifestyle factors such as high or low BMI, excessive exercise, high stress, or low caloric intake can also be to blame, as well as age-related changes in those over 35. Given this, it’s worth discussing with your health care provider, especially if you have other symptoms.

Can you get pregnant while breasting?

Finally, with all those missed or irregular periods, how are you supposed to know if you’re pregnant? Can you get pregnant at all? Yep. It’s a pretty huge misconception that you can’t get pregnant while breastfeeding. Even if you aren’t getting a period, you can still ovulate. In most women fertility is decreased while breastfeeding, but not non-existent.  You can be on the look-out for other pregnancy symptoms if you experience no periods at all, especially when protective measures may have failed, or if you want to be extra cautious take a pregnancy test every month.

You may also enjoy:

Menstrual Blood Colors and Textures: What Do They Mean

3 Ways You Can Be Pregnant and Still Have a Period

How Common Are False Pregnancy Tests?

Causes of Anovulatory Cycles

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I never missed one single period in spite of exclusively nursing, and I was so virulently angry over this. I felt completely lied to. No one ever offered an explanation or seemed to care. All I ever heard was “one of the great benefits of nursing is you don’t get a period!” I got mine MORE OFTEN while nursing, and it was heavier and crampier. All I ever got was crickets asking about it. No hormonal birth control, baby gained weight as expected, ate a LOT. All I see on here that fits was that I was a first time… Read more »


I am practising ecological breastfeeding for 1 year and 2months .. 1year of no period at all then Last feb. B4 my baby turns 1 my period came back and then this march 2019 i still had my period but for my shock april today 29 no period at all.. I remember my baby this april is teething she dont like to eat anything food at all as in she only wants to latch at me all the time.. I had protected sex using condom and had contact for only once so i wasnt thinking I am pregnant though i… Read more »


I am still a full breastfeeding my 10 month old baby. I didn’t have my period for 9 months after giving birth. Then last Feb, I got my period for 5 days. How come I didn’t get my period in March? I use the calendar method as birth control. I took a pregnancy test, and its negative…