Most stomach pain during pregnancy is caused by your body stretching and shifting to accommodate a growing baby, and simple strategies like adjusting your position, eating more fiber, using gentle heat, and staying hydrated can bring real relief. The type of pain you’re feeling and when it shows up during pregnancy points to different causes, each with its own fix.
Why Your Stomach Hurts at Different Stages
Pregnancy-related abdominal pain changes character as the weeks progress. In the first trimester, cramping often feels similar to period pain as the uterus begins expanding. By the second and third trimesters, the most common culprit is round ligament pain, caused by two rope-like bands (each about 10 to 12 centimeters long) that connect your uterus to your lower abdominal wall. As these ligaments stretch to support your growing belly, they become taut and prone to spasming, especially with sudden movement.
Constipation is another major source of abdominal discomfort throughout pregnancy. Hormonal shifts slow digestion considerably, and the expanding uterus puts physical pressure on your intestines. Gas, bloating, and indigestion follow the same pattern. Later in pregnancy, Braxton Hicks contractions can cause a tightening sensation across your abdomen that feels alarming but is typically harmless.
Relieving Round Ligament Pain
Round ligaments normally contract and loosen slowly. When they’re already under tension from supporting your belly, a sudden laugh, sneeze, or roll in bed forces them to contract faster than they can handle, producing a sharp, stabbing pain on one or both sides of your lower abdomen. The fix is partly about preventing those sudden jolts and partly about easing tension that’s already there.
If you feel a sneeze or cough coming on, lean forward and place your hands under your belly for support. Move slowly when changing positions, especially when getting out of bed or standing up from a chair. Throughout the day, gently bend and flex your hips to keep the ligaments from tightening up. An elastic maternity belly band distributes the weight of your uterus more evenly, reducing the constant pull on the ligaments.
For sleeping, lie on the side opposite to where the pain is worst, with your legs drawn up and a pillow between your knees. A second pillow tucked under your belly can take additional pressure off the ligaments. A daily floor stretch also helps: get on your hands and knees, lower your head toward the floor while keeping your hips up, and hold for several seconds.
Easing Constipation and Gas Pain
Aim for 25 to 30 grams of fiber each day from whole grains, fruits, vegetables, and legumes. That’s roughly double what many people typically eat, so increase gradually to avoid making gas worse. Drink 8 to 12 cups of water daily. Dehydration hardens stool and slows an already sluggish digestive system.
Light physical activity, even a 15 to 20 minute walk after meals, stimulates the muscles in your intestines and helps move things along. Eating smaller, more frequent meals instead of three large ones reduces the volume your slowed digestive tract has to process at once, which cuts down on bloating and that uncomfortable fullness under your ribs.
Stretches That Relieve Abdominal Pressure
Two stretches recommended by the Mayo Clinic target the muscles and ligaments that contribute to pregnancy belly pain. The cat-cow variation starts on your hands and knees with your head in line with your back. Pull your stomach in, rounding your back slightly, and hold for several seconds. Then relax your stomach and let your back return to a flat position without letting it sag.
The standing pelvic tilt works the lower back muscles that connect to your abdominal wall. Stand with your back flat against a wall, feet shoulder-width apart. Press the small of your back into the wall, hold for a few seconds, and release. Both stretches are safe to do daily and become more helpful as your belly grows in the second and third trimesters.
Using Heat Safely
A heating pad can ease sore muscles and ligament pain, but keep it off your abdomen entirely. Use it on your lower back or hips instead, on the lowest effective temperature setting, for no longer than 20 minutes at a time. A warm (not hot) bath is another option that relaxes the muscles surrounding your uterus without concentrating heat in one spot.
When Acetaminophen Is Appropriate
Acetaminophen (Tylenol) remains the safest first-line pain reliever during pregnancy. The American College of Obstetricians and Gynecologists reaffirmed in 2025 that current evidence does not support a link between prenatal acetaminophen use and developmental issues in children. The key is using the lowest dose that works for the shortest time you need it. NSAIDs like ibuprofen and aspirin are not considered safe, particularly after 20 weeks.
Braxton Hicks vs. Concerning Contractions
Braxton Hicks contractions feel like your belly tightening and then releasing. They’re irregular, don’t follow a pattern, and often stop when you change position, walk around, or drink water. True labor contractions come at regular intervals, get progressively closer together, last 60 to 90 seconds each, and continue regardless of what you do. If rest and hydration make contractions disappear, they’re Braxton Hicks.
Pain That Signals Something Serious
Not all pregnancy abdominal pain is harmless. In early pregnancy (around 6 to 8 weeks after your last period), sharp pain concentrated on one side of your pelvis or abdomen could indicate an ectopic pregnancy, where a fertilized egg implants outside the uterus. This pain may come with irregular bleeding and requires immediate medical attention.
Later in pregnancy, sudden, severe abdominal or back pain with a rigid, tender uterus may signal placental abruption, where the placenta separates from the uterine wall. Vaginal bleeding often accompanies it, though not always, because blood can become trapped inside the uterus.
Upper abdominal pain, particularly under the ribs on the right side, paired with a severe headache, vision changes, nausea, or swelling is a hallmark of preeclampsia. This combination of symptoms reflects dangerously high blood pressure and warrants emergency evaluation. The threshold for concern is a blood pressure reading of 140/90 or higher combined with any of these symptoms.