Most people need between 30 and 40 postpartum diapers (adult disposable underwear) for the heaviest bleeding in the first two weeks after delivery. If you prefer to use a combination of postpartum diapers and thick maternity pads, you can get by with fewer diapers and supplement with pads as the flow lightens. The total depends on how your bleeding progresses, but having a clear week-by-week breakdown makes it easy to stock up before your due date.
What Postpartum Bleeding Looks Like Week by Week
Postpartum bleeding, called lochia, happens whether you deliver vaginally or by C-section. It moves through three distinct stages, and each one changes how much protection you need.
During the first three to four days, expect flow similar to a very heavy period with dark or bright red blood and small clots. You can expect to soak through one thick pad every two to three hours, and some people go through a pad every one to two hours on day one and two. That works out to roughly 8 to 12 pads or diapers per day in this stage.
From about day 4 through day 12, bleeding shifts to a thinner, pinkish-brown discharge with fewer or no clots. The flow is moderate, and you’ll likely change every three to four hours, using about 6 to 8 pads or diapers per day.
Starting around day 12 and lasting up to six weeks, discharge becomes yellowish-white with little to no blood. At this point a thin panty liner is usually all you need.
How Many to Buy: A Simple Estimate
Here’s a practical shopping list based on those timelines:
- Days 1 to 4 (heavy flow): 10 to 12 postpartum diapers per day, totaling about 40 to 48. In practice, many people use closer to 8 to 10 per day because adult diapers hold significantly more fluid than a standard maternity pad. A high-absorbency disposable underwear product can hold up to 40 ounces (5 cups), so you won’t need to change as often. Budget around 24 to 32 diapers for this stage.
- Days 5 to 14 (moderate flow): 4 to 6 diapers per day, totaling about 40 to 60. Many people switch to heavy maternity pads during this stretch since the flow no longer warrants full disposable underwear. If you stick with diapers, plan for about 50.
- Weeks 3 to 6 (light flow): Panty liners are enough. No diapers needed.
If you plan to use postpartum diapers exclusively through the first two weeks, a pack of 60 to 80 covers most people comfortably. If you plan to transition to maternity pads after the first few days, 24 to 32 diapers plus two packs of heavy maternity pads (typically 20 to 28 pads per pack) will get you through.
Postpartum Diapers vs. Maternity Pads
Postpartum diapers (disposable adult underwear) and maternity pads both work, but they solve different problems. Diapers pull on like underwear and provide full coverage, which makes them popular in the first few days when leaks are most likely, especially overnight or while sleeping. A high-absorbency option can last up to eight hours overnight without leaking. Maternity pads are bulkier than regular pads but less bulky than diapers, and many people prefer them once they’re moving around more and the flow has eased.
Some people alternate: diapers for nighttime and pads during the day. If that’s your plan, buy about 10 to 14 diapers for nighttime use in the first two weeks, plus two to three packs of maternity pads for daytime.
What the Hospital Provides
Most hospitals supply disposable mesh underwear, postpartum pads, and ice packs for your stay, so you don’t need to bring your own. A typical hospital stay is one to two days for a vaginal delivery and two to four days for a C-section. That means the hospital covers roughly the first 1 to 4 days of supplies. Ask your nurse for extras before discharge. Many will send you home with a bag of mesh underwear and pads if you ask.
Your shopping list is for when you get home, so subtract those hospital days from the estimates above.
Choosing Diapers After a C-Section
If you had a C-section, the waistband matters. Your incision sits low on your abdomen, and anything that presses or rubs across it will be painful. Look for disposable underwear with a high waistband that sits well above the incision line, or styles with a soft, non-binding waist without tight elastic. Some postpartum underwear features adjustable sides with hook-and-loop closures so you can control compression without pulling anything over the incision. Avoid low-rise styles that land directly on the scar.
Signs Your Bleeding Isn’t Normal
Postpartum bleeding is expected, but soaking through more than one pad every one to two hours is not. Other red flags include a sudden increase in blood loss after it had been slowing down, passing clots larger than a quarter, feeling dizzy or weak, running a fever, or noticing a foul smell from the discharge. Any of these warrants a call to your provider right away, as they can signal complications that need prompt treatment.