The most reliable sign of diastasis recti during pregnancy is a visible doming or coning shape along the midline of your belly, especially when you sit up, get out of bed, or exercise. You might also feel a soft gap or groove running vertically between your abdominal muscles, typically around or above your belly button. The condition is extremely common: studies show it affects up to 100% of women by the 35th week of pregnancy, though the severity varies widely.
What Diastasis Recti Actually Is
Your abdominal muscles run in two vertical columns down the front of your torso, connected in the center by a band of connective tissue called the linea alba. During pregnancy, hormonal changes soften this tissue while the growing uterus pushes outward, stretching the two muscle columns apart. Diastasis recti is the term for when that gap becomes wider than about 2.2 centimeters, or roughly two finger widths.
This isn’t a tear or a rupture. It’s a stretching and thinning of connective tissue. It happens to some degree in nearly every pregnancy, which is why many clinicians consider mild separation a normal part of carrying a baby rather than a disorder. The question isn’t really whether it will happen, but how wide the gap becomes and whether it causes problems.
Visual Signs You Can Spot Yourself
The hallmark sign is what physical therapists call “coning” or “doming.” When you do something that engages your core, like sitting up from a lying position, leaning back in a chair, or getting out of a car, watch the center of your belly. If you see a ridge or tent-like shape rising along your midline, that’s the contents of your abdomen pushing through the gap where the connective tissue has thinned.
You might also notice a general bulge above your belly button or along the center of your stomach that looks different from the rest of your pregnant belly. Some women describe it as their belly looking pointy or football-shaped during certain movements rather than round. This bulging tends to be more noticeable during physical activity or transitions like rolling out of bed.
How to Do a Simple Self-Check
You can check for diastasis recti at home, though it gets harder to assess as your belly grows in the third trimester. Here’s how to do it:
Lie on your back with your knees bent and feet flat on the floor. Place the fingers of one hand horizontally across your belly button, pointing toward your opposite hip. Slowly lift just your head and shoulders off the ground, like the very beginning of a crunch. As your abdominal muscles engage, feel for a gap or softness between the two firm ridges of muscle on either side of your midline.
Check three spots: just above your belly button, right at your belly button, and a couple of inches below it. The gap may be wider in one area than another. If you can fit two or more fingers into the space, and especially if the tissue beneath feels soft with little resistance, that suggests diastasis recti. A gap of one finger width or less with firm, springy tissue underneath is generally considered normal.
Keep in mind that this self-check gives you a rough idea but isn’t a clinical diagnosis. During pregnancy, your growing uterus makes it harder to feel the edges of the muscles clearly. A pelvic floor physical therapist can give you a more precise assessment using hands-on evaluation or ultrasound imaging.
Symptoms Beyond the Visible Gap
Diastasis recti doesn’t always announce itself with a dramatic cone shape. Sometimes the signs are functional rather than visual. When the abdominal wall can’t do its job of supporting your trunk, other structures pick up the slack, and that can create a chain of secondary symptoms.
- Lower back pain. Your deep abdominal muscles help stabilize your spine. When they’re separated and weakened, your back muscles work overtime, leading to aching or stiffness that worsens as the day goes on.
- Pelvic floor problems. The abdominal wall and pelvic floor work as a team. A weakened midline can increase downward pressure on the pelvic organs, contributing to urinary leakage when you cough, sneeze, or laugh.
- Constipation. Your abdominal muscles help generate the pressure needed for bowel movements. Reduced core function can make this harder.
- Hip or pelvic girdle pain. The body compensates for a weakened core by shifting stress to the hips and pelvis, which can cause pain in those areas during walking or standing.
None of these symptoms on their own confirm diastasis recti, since pregnancy causes many of them independently. But if you’re experiencing several of them alongside visible coning, it’s worth getting a proper evaluation.
Who Is More Likely to Develop It
Some pregnancies carry a higher risk. Carrying multiples (twins or more) creates significantly more abdominal stretch than a single baby. Women who have had multiple pregnancies are more likely to develop it because the connective tissue has been stretched before and may not have fully recovered. Maternal age over 35 is another factor, as connective tissue loses some elasticity over time. Excessive weight gain during pregnancy and having a particularly large baby also increase the stretch on the abdominal wall.
That said, diastasis recti doesn’t discriminate neatly. Research shows the prevalence reaches 100% by week 35 of pregnancy in some study populations. It can happen in a first pregnancy to someone in their twenties who exercises regularly. The difference is that higher-risk pregnancies tend to produce wider separations that take longer to resolve postpartum.
What to Avoid if You Notice It
If you see coning or doming during any movement, that’s your body telling you the movement is creating more pressure than your abdominal wall can handle. The general principle is to avoid or modify any exercise or daily movement that causes your belly to bulge outward in that tent-like shape.
Common culprits include traditional crunches and sit-ups, planks held for long periods, heavy lifting without core bracing, and even the way you get out of bed. Instead of sitting straight up from lying down, try rolling onto your side first and pushing up with your arms. This simple change takes significant load off the midline.
Exercises that focus on deep core engagement, like gentle pelvic floor contractions and controlled breathing techniques that activate the deepest abdominal layer, can help support the separation without worsening it. A pelvic floor physical therapist can design a program specific to the severity of your separation and your stage of pregnancy.
What Happens After Delivery
The gap doesn’t close the moment you deliver. Research tracking women from late pregnancy through the postpartum period found that while 100% had diastasis recti near the end of pregnancy, the number dropped to 39% by six months after birth. For most women, the connective tissue gradually firms up and the muscles move closer together in the first few months postpartum, especially with targeted rehabilitation exercises.
Between 35% and 60% of women still have some degree of separation in the immediate postpartum period. For many of these women, working with a pelvic floor physical therapist speeds recovery and helps rebuild functional core strength. In a small percentage of cases where the separation is severe and doesn’t respond to rehabilitation, surgical repair is an option, but that’s typically not considered until well after the postpartum recovery window has closed.