Postpartum cramping and afterbirth pains

How recovery typically progresses

Immediately after

First days

Early postpartum, the first six weeks. Cramps usually last two or three days and are most noticeable while breastfeeding, since nursing stimulates the uterus to contract and increases the severity of the pains. The organ has real work to do: the uterus weighs about 1,000 grams right after delivery and is down to roughly 500 grams by the end of the first week.

Settling in

Early weeks

The months after. Cramping should be finished well before this point. The uterus reaches about 50 to 100 grams by around six weeks, and pain past that window is not afterbirth pains any more. New or returning cramping in month two or three, especially with bleeding, is a reason to be seen rather than to wait it out.

Longer arc

Beyond six weeks

Weaning and the long view. Nursing-triggered cramps belong to the early weeks only, so they do not come back as feeds taper. Cramping that shows up later in the first year is usually about something else, often the return of periods, and is a question for your provider rather than a postpartum recovery issue.

What does the evidence show for postpartum cramping and afterbirth pains?

• Afterbirth pains usually last for two or three days following the birth, and breastfeeding stimulates the uterus to contract, which increases their severity. 1
• People who have given birth before usually experience more pain, because a uterus that has lost some tone contracts and relaxes alternately rather than staying steadily contracted. 1
• Across 11 studies covering 946 women, NSAIDs were probably better than placebo for adequate pain relief with a risk ratio of 1.66 on moderate-certainty evidence, out of a review that pooled 28 randomized trials and 2,749 women. 1
• NSAIDs were also probably better than opioids for adequate pain relief, with a risk ratio of 1.33 across 5 studies and 560 women on moderate-certainty evidence, and with fewer adverse events. 1
• The uterus weighs roughly 1,000 grams immediately after delivery, falls to about 500 grams by the end of the first week, and reaches 50 to 100 grams within approximately six weeks: the cramping is that shrinking happening. 2
• Postpartum warning signs include bleeding that soaks more than one pad an hour, clots the size of an egg or larger, a fever above 100.4°F, and foul-smelling vaginal discharge. 3

When should I call my provider about postpartum cramping and afterbirth pains?

Postpartum bleeding that soaks more than one pad in an hour, or clots the size of an egg or larger, is heavier than normal afterbirth bleeding and needs same-day medical attention rather than a wait-and-see approach. A temperature above 100.4°F, foul-smelling vaginal discharge, or ongoing lower abdominal pain that feels different from the rhythmic cramping of afterbirth pains can point to a postpartum infection. Call your provider promptly for any of these, since they fall outside the normal two-to-three-day pattern of afterbirth cramping. Trust your read on your own body. If something feels off beyond the list above, please consult your healthcare provider rather than waiting it out.