The Postpartum Belly Gap: Diastasis Recti Explained

Weeks or months after birth, many moms notice their belly doesn't quite feel — or look — the way they expected, often as part of pelvic floor recovery. There may be a soft pooch that won't flatten, or a strange ridge that pops up down the middle when you sit up. Often, that's diastasis recti: a separation of the abdominal muscles that's extremely common after pregnancy, usually improvable, and not something you broke by doing anything wrong.

#What Diastasis Recti Is

Your "six-pack" muscle (the rectus abdominis) runs in two halves down the front of your belly, joined in the middle by a band of connective tissue called the linea alba. During pregnancy, your growing uterus stretches that band, and the two muscle halves drift apart to make room. That separation is diastasis recti.

Some degree of separation happens in most pregnancies by the third trimester — it's normal and necessary to fit a baby. The question after birth is how much of it narrows back up on its own, and how much lingers.

When the gap remains, you may notice:

• A pooch or bulge in the middle of your belly that doesn't flatten, even as you lose pregnancy weight
• A ridge or "doming" down the midline when you sit up from lying down or strain
• A feeling of core weakness — your midsection not feeling as supportive as it used to
• Sometimes related lower back or pelvic discomfort, since the core helps stabilize all of that

It's not about weight, and it's not a sign you're out of shape. It's a connective-tissue stretch from carrying a baby.

#A Simple Self-Check

You can check for diastasis recti at home, ideally a few weeks postpartum or later:

1. Lie on your back with your knees bent and feet flat.
2. Place your fingers horizontally just above, at, and just below your belly button, fingertips pressing gently into your midline.
3. Slowly lift your head and shoulders a little, like the start of a small crunch.
4. Feel for a gap between the two muscle bands, and notice how many fingers fit in the gap and how deep it feels.

A gap of roughly two finger-widths or more, especially if it feels soft and deep, suggests diastasis recti. This is a rough screen, not a diagnosis — but it tells you whether it's worth bringing up with your team or a pelvic floor physical therapist, who can assess it properly.

#What Helps (and What to Skip Early)

The encouraging news: diastasis recti often improves over the months after birth, and targeted rehab helps it along.

What helps:

• Pelvic floor and core physical therapy. This is the cornerstone. A trained PT teaches you to engage your deep core (the transverse abdominis) and pelvic floor together, which supports the midline and helps the gap narrow functionally. This is far more effective than guessing on your own.
• Breath and gentle deep-core work, started appropriately and progressed over time.
• Good lifting and movement mechanics — engaging your core before you lift, rolling to your side to get up rather than crunching straight up.
• Patience. Connective tissue remodels slowly. Months, not weeks.

What to be cautious with early on:

• Traditional crunches, sit-ups, and full planks can increase the pressure that pushes the midline outward (you may literally see the doming when you do them), and can work against you in early recovery.
• Heavy lifting and high-pressure core moves before your core is ready.

This isn't "never do ab work again" — it's "rebuild from the deep core outward, in the right order, ideally with guidance." A PT can tell you when you're ready to progress.

#When to Get It Evaluated

Most diastasis recti is managed conservatively with time and PT. A few situations are worth a specific evaluation:

• A large or persistent separation that isn't improving with rehab
• Pain, a bulge that protrudes (which could be a hernia at the midline), or significant functional problems
• The separation bothering you enough — cosmetically or functionally — that you want a clear plan

Your OB or a pelvic floor PT can assess it, and in select cases where conservative measures aren't enough, surgical repair is an option. But that's the exception; the large majority of moms improve with rehab and time.

#The Reframe

Diastasis recti is the common, expected aftermath of a belly that stretched to hold a baby — a separation of the ab muscles along the midline, not a failure or a flaw. A simple finger-check tells you if it's there, pelvic floor and deep-core physical therapy is the proven path to improvement, and the early move is to rebuild from the inside out rather than crunching into it. It usually gets better with time and the right work. Be patient with the belly that carried your baby — it's doing what it always does after pregnancy, finding its way back.