Do Your Periods Change After Pregnancy?

For some women, periods become problematic

Mom holding newborn and checking smartphone

You go through so many physical changes during pregnancy that you may not pay much attention to the break you get from your monthly periods. But what can you expect after pregnancy? Will your periods just pick up where they left off or will you face new challenges?


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The answer? It could go either way.

“Women often complain of changes in their periods after having a baby,” says Ob/Gyn Diane Young, MD. “For women who are not breastfeeding, there are three things that are likely to happen with the menstrual period — periods return to normal, periods get worse or periods get better.”

You likely won’t have a period while you’re breastfeeding, at least not for a few months.

To produce breast milk, your brain produces higher levels of the hormone prolactin. This typically means you won’t ovulate (your ovaries won’t release eggs). So you likely won’t have periods.

Getting back to normal

But what happens if you decide not to breastfeed or when you stop?

“Most women will resume normal periods after having a baby,” Dr. Young says. If your period is “normal,” it occurs every 21 to 35 days. Bleeding lasts from two to seven days, she says.

“Back to normal” likely applies to whatever was going on before your pregnancy, as well. Here are two examples:


Birth control: Using birth control pills for contraception often results in skipped, shorter, lighter and/or less painful periods. If you go back to the pills after pregnancy, the lighter periods may resume. If you don’t, you likely will have normal, heavier periods.

Endometriosis: If you have endometriosis or a history of painful periods, you may have easier periods at first after your baby is born. But this change is typically only temporary. A holdover of increased levels of progesterone from pregnancy may cause endometrial implants to get smaller. The result is less painful periods. Your doctor will want to follow up with you regularly after your pregnancy, however. “Painful periods are likely to resume,” Dr. Young says.

How do the rigors of pregnancy and childbirth affect future periods?

Here again, things can go either way, Dr. Young says.

Some women experience heavier, longer or more painful periods after having a baby. These changes may relate to a larger uterine cavity causing more endometrium (mucous lining the uterus) to shed.

For some women, however, their periods improve.

This may occur after pregnancy and childbirth have stretched the uterus and dilated the cervix. This alone can improve future periods. Pregnancy also releases hormones that relax uterine muscles.


What else can make periods worse after pregnancy?

Three other conditions may cause more problematic periods after pregnancy:

  • Structural defects. Your doctor likely will treat defects such as polyps and submucosal fibroids with minimally invasive surgery.
  • Adenomyosis. Your doctor can manage this thickening of the uterus with minimally invasive surgery or hormone therapy.
  • Overactive or underactive thyroid disorder. Your doctor may use a range of treatments for these conditions.

Easier periods are not always good news

Some women may have light periods or no periods due to two rare complications after pregnancy:

  • Sheehan’s syndrome. This occurs when severe blood loss or low blood pressure damage the pituitary gland. This disrupts normal ovary function and periods stop. Hormone therapy is a common treatment.
  • Asherman’s syndrome. This is the result of scar tissue in the lining of the uterus. Asherman’s syndrome may develop after a dilatation and curettage (D&C). Doctors may perform a D&C after a miscarriage or delivery.

“The bottom line is that periods can change after having a baby,” Dr. Young says. “If you are concerned about your periods, make an appointment with your OB/Gyn. There are medical therapies to help your periods.”

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