Your belly button goes through a surprising transformation during pregnancy. As your uterus expands and pushes outward, the small indentation most people have had since birth can flatten, stretch, or pop out entirely. These changes are normal, temporary, and driven by the same abdominal pressure that makes your belly grow. Here’s what to expect and what’s worth paying attention to.
Why Your Belly Button Pops Out
The belly button is essentially a scar from your umbilical cord, and it sits over a natural weak point in the abdominal wall. During pregnancy, your uterus grows from roughly the size of a pear to the size of a watermelon, creating significant pressure against the front of your abdomen. That pressure pushes outward on everything in its path, including the tissue behind your navel.
For many women, this turns an “innie” into an “outie.” The change is most likely to happen in the second or third trimester, most commonly around 26 weeks. Not everyone’s belly button fully pops out. Some women notice it simply flattens or looks wider, while others see a distinct protrusion. The difference comes down to individual anatomy: how deep your navel was to begin with, how much abdominal fat you carry, and how your skin responds to stretching.
Pain and Sensitivity Around the Navel
A sore or tender belly button is one of the more common complaints in the second and third trimesters. Part of this is straightforward: skin that used to be tucked inside your navel is now exposed and rubbing against clothing for the first time. That newly stretched skin can feel raw, dry, or irritated.
Deeper discomfort often comes from structures behind the belly button. Your round ligaments, two rope-like bands each about 10 to 12 centimeters long, connect your uterus to your lower abdominal wall through the groin. As your uterus expands, these ligaments get longer and wider to support the extra weight. That tension can radiate pain toward the belly button area, especially when you move suddenly, sneeze, or roll over in bed. Women commonly describe this as sharp, stabbing, or pulling. It tends to come in bursts rather than lasting all day, and it eases when you slow down or shift positions.
Itching is another frequent issue. The skin over your abdomen stretches significantly, and around the navel the stretching is most concentrated. Keeping the area moisturized with a fragrance-free lotion or oil helps reduce the itch. If itching becomes severe or spreads to your palms and soles, that’s worth mentioning at your next appointment, as it can occasionally signal a liver condition called cholestasis.
Umbilical Hernia vs. Normal Protrusion
A belly button that sticks out during pregnancy is almost always harmless. True umbilical hernias, where a small loop of tissue or intestine pushes through the abdominal wall at the navel, are rare in pregnancy, with one large study putting the incidence at just 0.08%. Still, it’s useful to know the difference.
A normal “outie” feels soft and painless when you press on it, and it doesn’t change much from day to day. A hernia tends to create a firmer bulge that may get bigger when you cough, laugh, or strain. It can also cause localized pain or tenderness that doesn’t go away with rest. Hernia symptoms most often appear in the second trimester, when intra-abdominal pressure starts climbing. Most umbilical hernias in pregnancy are small, don’t cause complications, and can be addressed after delivery if needed.
Abdominal Muscle Separation and Your Navel
Diastasis recti, a separation of the two sides of your main abdominal muscle, affects a large percentage of pregnant women and can change how your belly button looks. The gap runs vertically from the bottom of your breastbone down to the belly button, sometimes creating a visible ridge or outward bulge along the midline. This can make the navel area look wider or more prominent even beyond the normal pregnancy protrusion.
Diastasis recti is not a hernia. It doesn’t carry a risk of tissue getting trapped or losing blood supply. However, if the connective tissue at the navel thins enough from the separation, a small hernia can develop at or just above the belly button. This is uncommon, but it’s one reason to mention any new, firm, or painful bulge to your provider.
What to Do About a Belly Button Piercing
If your navel piercing is fully healed, you can generally keep it in during early pregnancy. As your belly grows, though, the expanding skin puts tension on the piercing site, which increases the risk of tearing, irritation, and infection. Many women find their jewelry starts to pull or feel uncomfortable in the second trimester.
Flexible maternity belly button rings, made from a soft, nickel-free material, are designed to expand with your belly and reduce the chance of skin injury. They’re a practical option if you want to keep the piercing open without the rigidity of metal jewelry. If your piercing was recent and hasn’t fully healed before you became pregnant, the standard recommendation is to remove it entirely until after delivery. You should also plan to remove any belly button jewelry before going to the hospital, since it needs to come out if a cesarean section becomes necessary.
Keeping Your Belly Button Clean
When your belly button pops out, cleaning it actually gets easier. An innie has folds and crevices that trap dead skin, lint, and bacteria. An outie is exposed to open air and fully accessible. Mild, fragrance-free soap and water are all you need. Gently lather the area with your hands or a soft washcloth, rinse, and dry it well. Avoid scented lotions or harsh products on the navel itself, as the newly exposed skin is more sensitive than you might expect.
You can clean it daily without any problem, as long as you’re not scrubbing hard enough to irritate the skin. If you notice unusual discharge, persistent redness, or pain that doesn’t seem related to stretching, it’s worth having your provider take a look.
What Happens After Delivery
For most women, the belly button gradually returns to its pre-pregnancy shape once abdominal pressure drops after birth. The timeline varies. Some women see their navel settle back within a few weeks, while for others it takes several months. Skin elasticity plays a major role: women with naturally more elastic skin tend to bounce back faster, while those with less elastic skin may notice lasting changes in the look or depth of their navel.
If you had significant diastasis recti, your belly button may sit slightly wider or flatter than it did before pregnancy until the abdominal muscles regain tone. Targeted core rehabilitation exercises, often guided by a physical therapist, can help close the gap and restore more of the original shape. In cases of multiple pregnancies or very large separations, some women find their belly button never looks quite the same, though the change is usually subtle.