What Your Pelvic Floor Is Trying to Tell You During Pregnancy

If something feels off during a workout while you're pregnant, the instinct is to stop. Sometimes that's exactly right. But most of the time, a pelvic floor symptom showing up mid-set is your body giving you information you can act on, not just a signal to shut everything down. Often a smaller change — to load, position, breath, tempo, or range — solves it without calling it quits.

This applies to four core and pelvic floor symptoms you'll hear about a lot during pregnancy: leaking, heaviness or bulge, pressure, and doming or coning. Here's what each one actually means, and which modifications can help you keep training through it.

Disclaimer: Before starting a training program, you should seek approval from your medical provider and adhere to any recommendations regarding contraindications specifically identified by your provider.

Why Pelvic Floor Symptoms Happen More During Pregnancy

Your body is doing a lot. Blood volume goes up 30 to 50%, which raises your resting and working heart rate. The hormone relaxin loosens your joints and ligaments, including through the pelvis, which changes how load moves through your hips and core. As your belly grows, your center of gravity shifts and your organs change position. This includes the diaphragm now having a reduced range of motion, which changes how deep a breath you can take. 

None of that is a malfunction. It's why the same exercise can feel different at 12 weeks than it did last month, and different again at 30. (For more on how training actually shifts trimester to trimester, here's our full guide to exercising during pregnancy.)

“Pregnancy creates systemic changes throughout the body that can directly influence how the pelvic floor and core coordinate during exercise and loading,” says Dr. Katie Fincher, PT, DPT, CSCS, a board-certified clinical specialist in pelvic and women's health physical therapy. “As the uterus grows, the rib cage and diaphragm may not have quite the same space or movement options they had before pregnancy, and normal changes in posture and center of mass can also contribute to changes in pressure management or symptoms.”

That is one reason continuing to train during pregnancy can be so valuable. “Maintaining good breathing mechanics, thoracic mobility, core strength, and overall movement capacity can help the body adapt to these changes rather than simply avoiding activity,” says Dr. Fincher. “The goal is not necessarily to train exactly the same way throughout pregnancy, but to continue training while modifying exercises and loading based on the individual’s symptoms and changing needs.”

Leakage

Leaking during a workout, whether it's a cough, a jump, or the last rep of a set, is common in pregnancy and worth taking seriously as a signal, not as something to just push through or immediately shut down over.

What to modify: Intensity is the first thing to adjust, not the last. If you experience leakage during a specific movement, slow the tempo down, drop the impact (swap a jump for a step), or reduce the load before you eliminate the exercise entirely. Coordinating your exhale with the hardest part of the effort, instead of holding your breath through it, also changes how pressure moves through your pelvic floor in the moment. Kegels alone aren't the fix here. The pelvic floor's job is to coordinate with your breath and your effort, not just squeeze harder.

According to Dr. Fincher, “Breath coordination can be a game changer for stress urinary incontinence. When we coordinate an exhale with a movement or load, we can better manage changes in intra-abdominal pressure and how that pressure is distributed through the abdominal wall and pelvic floor. For many people, that simple strategy can be enough to reduce leaking during activities such as lifting, jumping, or running.” 

“But breathing is not just about reducing pressure — it is also about timing and coordination,” Dr. Fincher adds. “Ultimately, we want the pelvic floor and deep core system to respond automatically and appropriately when the body encounters load or impact. Using an intentional breathing strategy during training can help build that coordination, with the long-term goal of the body being able to manage those demands without having to consciously think about every breath.”

Heaviness or Bulge

A sense of heaviness, pressure, or bulge, especially by the end of the day or the end of a workout, is often related to pelvic organ prolapse, and it's your body giving you important feedback about how much intra-abdominal pressure a movement is creating.

What to modify: Prioritize breathing mechanics and control over intensity. Scale back the moment you notice heaviness, pressure, or discomfort. That might mean shortening how long you're upright and loaded, reducing reps before fatigue sets in, or choosing a supported position over a standing one for that exercise. Prolapse isn't a reason to stop training; it's a reason to work with your body instead of against it, and it isn't a symptom to push through at full intensity.

Pressure

Pressure is what you feel when a movement bears down on your pelvic floor from above, usually from breath-holding, straining, or loading a position at its deepest point. It's your pelvic floor telling you it's absorbing more downward force than it can manage well in that moment.

What to modify: Breath first. Exhale through the hardest part of the effort instead of holding your breath and bearing down against a closed airway. Wider stances (think sumo or plié) for squats and hinges also change how that pressure distributes compared to a narrower stance. If a movement's deepest range is where you feel it most, reducing that range is a reasonable next step before dropping the exercise entirely.

Separately, if you feel dizzy or short of breath in a specific position, especially lying flat on your back later in pregnancy, that's usually a blood flow issue, not a pressure one. Lying on your back for extended periods can compress major blood vessels returning blood to your heart. Side-lying or upright variations of the same exercise solve that. If it doesn't clear once you've moved, that's a red flag to drop the movement, not something to modify around.

Doming or Coning

If your midline visibly domes, cones, or bulges up the center of your stomach during a core exercise, that's your abdominal wall telling you it isn't managing the current load or range well in that position.

What to modify: Range of motion, first. Regress to a smaller range where your midline stays flat, rather than pushing through a full sit-up or a deep crunch pattern that your abdominal wall can't yet support. The goal underneath every exercise is the same coordination between your deep core and pelvic floor, not the depth of the movement.

“Coning simply gives us information about how the abdominal wall is managing pressure during a movement,” explains Dr. Fincher. “If you notice a significant amount of coning — especially if it is accompanied by discomfort, heaviness, or other symptoms — that may be a cue to adjust your strategy. Changing your position, modifying the load, or altering your breathing pattern can all help improve pressure management and reduce unnecessary strain on the abdominal wall.”

When Modifying Isn't Enough

Modifying is usually the first move. It isn't the only one, though — and it isn't always enough. Some signs mean stop the workout and call your doctor, full stop, no modification to try first. Those include: 

• Difficulty breathing
• Chest pain
• Feeling dizzy or faint
• Disturbances of eyesight
• Heart palpitations
• Vaginal bleeding
• Regular, painful contractions
• Fluid gushing or leaking from the vagina
• Calf pain or swelling
• Headache with dizziness or heart palpitations

Outside that list, most of what comes up is about coordination, not emergency, including a common misconception: that doing more kegels is the key to a strong pelvic floor.

The Kegel Question, and Labor Prep

A lot of pregnant women hear that a strong pelvic floor means doing more kegels, especially as labor gets closer. It's more complicated than that, and it's true well beyond pregnancy too. The pelvic floor's actual job during birth is to relax and move out of the way, not to clamp down. Practicing that relaxation and mobility, through breath work and specific mobility drills, matters as much heading into the third trimester as strength work did earlier on.

“While maintaining strength throughout pregnancy is extremely important, preparing for labor also means recognizing that the pelvic floor needs to be able to lengthen and relax,” says Dr. Fincher. “As the baby descends through the pelvis and during the pushing phase, or stage two of labor, the pelvic floor must accommodate that movement rather than simply contract.”

She adds, “Mobility work, breathing strategies, and intentional pelvic floor relaxation can help reduce unnecessary tension and improve awareness of how to lengthen the pelvic floor as you prepare for birth.” 

When to See a Pelvic Floor PT

Every modification above is something to try, not a guarantee. If a symptom doesn't improve after you've adjusted load, position, breath, tempo, or range, or if it's getting worse instead of better, that's the moment to see a pelvic floor physical therapist. That's not a failure of the modification, and it's not a sign you did something wrong. It's the same logic as everything else here: your body is telling you something, and the next right move is to get more specific information, not to guess in the dark or grit through it indefinitely.

What if you didn't have to figure out these modifications on your own in the first place?

Mom Moves does this thinking for you. Built trimester by trimester with a pelvic floor PT, the modifications are already programmed in, not something you have to guess at mid-set.

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