Joint pain during pregnancy is common and, in most cases, completely normal. Somewhere between a quarter and two-thirds of pregnant women experience significant joint discomfort at some point, with the likelihood increasing as pregnancy progresses. The pain is driven by real physiological changes: your body produces hormones that loosen your ligaments, you gain weight that shifts your center of gravity forward, and fluid retention puts pressure on nerves and soft tissue. Understanding where this pain comes from and what it feels like can help you tell the difference between ordinary pregnancy discomfort and something worth flagging to your provider.
Why Pregnancy Causes Joint Pain
The primary driver is a hormone called relaxin, produced by your ovaries and placenta. Relaxin does exactly what it sounds like: it loosens and relaxes your muscles, joints, and ligaments so your body can stretch to accommodate a growing baby and eventually deliver. Relaxin levels increase seven to ten-fold during pregnancy, and while that flexibility is essential for a safe delivery, it also means your joints have less structural support than usual. Ligaments that normally hold joints tightly in place become more elastic, which can create instability, abnormal movement, and pain.
On top of hormonal changes, your body is carrying significantly more weight, and that weight is concentrated in front of your body. Your center of gravity shifts forward and upward compared to a non-pregnant state. To compensate, your posture changes: your hips extend more, your trunk tilts back, and the muscles and joints of your lower body absorb forces they aren’t accustomed to. This combination of looser ligaments and increased mechanical load is what makes joints from your pelvis to your feet vulnerable to pain.
Pelvic Pain Is the Most Common Type
The pelvis takes the biggest hit. About 24% of pregnant women report pelvic girdle pain, but studies suggest the number climbs to 60 to 70% in late pregnancy. Most women who develop it do so in the third trimester, when relaxin levels, body weight, and the anterior shift in gravity are all at their peak.
Pelvic girdle pain typically shows up as a dull ache across the front or back of the pelvis, sometimes radiating into the groin, thighs, or lower back. For most women it’s manageable, though uncomfortable. A smaller number develop a more specific condition called symphysis pubis dysfunction, where the joint at the front of the pelvis becomes excessively loose. SPD feels different from general pelvic soreness: it can produce sharp, stabbing pain at the front of the pelvis, a sensation that the pelvis is “wobbly,” and sometimes a clicking or grinding sound. Walking, climbing stairs, and rolling over in bed become notably difficult. Mild pelvic discomfort is a normal part of pregnancy. Intense pain that makes it hard to bear weight is not something you need to push through, and it’s worth bringing up with your provider.
Hips, Knees, and Lower Back
Hip pain often worsens at night, especially if you’re a side sleeper. As ligaments around the hip loosen and the joint absorbs more load from your shifted center of gravity, lying on one side for hours concentrates pressure on the outer hip. Your knees can also be affected, partly because of the extra weight they carry and partly because of changes happening further down the chain at your feet.
Lower back pain is so prevalent during pregnancy that many women consider it inevitable. The forward pull of a growing belly forces the lumbar spine into a deeper curve, and the muscles and joints of the lower back work harder to keep you upright. This isn’t technically “joint” pain in the way a sore knee is, but the facet joints of the spine are under real mechanical stress, and the discomfort often blends with hip and pelvic pain.
Hands, Wrists, and Feet
Joint pain during pregnancy isn’t limited to the lower body. Fluid retention, which peaks in the third trimester, can compress the nerve running through your wrist and cause carpal tunnel syndrome. It usually shows up in both hands and brings numbness, tingling, and wrist pain, often worse at night. Pregnant women with higher levels of fluid retention are significantly more likely to develop these symptoms.
Your feet undergo changes that can be permanent. The combination of extra body weight pressing down on arches that are held together by now-lax ligaments can flatten the arch and widen the foot. Research has found that these structural changes often persist after delivery. A flattened arch changes how forces travel up through your ankle, knee, and hip. In one large study, people with lower arches had 1.3 times the odds of knee pain and 1.4 times the odds of cartilage damage at the inner knee compared to those with higher arches. This is one reason some women notice new knee or hip pain during or after pregnancy that wasn’t there before.
What Helps Relieve the Pain
Several non-drug approaches have good evidence behind them. Physical therapy that focuses on pelvic tilts, gentle stretching, and back strengthening is one of the most effective. A simple stretch called the “cat-camel,” where you alternate between arching and rounding your back on all fours, can temporarily ease both lower back and pelvic pain. Exercises like knee pulls, straight leg raises, and curl-ups (modified for pregnancy) also help by building stability around joints that have lost some of their ligament support.
Water-based exercise is particularly well-suited to pregnancy. Buoyancy takes weight off your joints while still allowing you to strengthen the muscles around them. Pelvic support belts can reduce pelvic girdle pain, though they work best when worn for short periods rather than all day. Acupuncture and massage are also options that some women find helpful.
Sleep position matters more than you might expect. Sleeping on your side with your knees bent is the recommended position once your abdomen starts to expand, and placing a pillow between your knees can significantly reduce hip and lower back pressure by keeping your spine and pelvis aligned. A pillow tucked under your belly or against your lower back adds further support. Full-length pregnancy pillows that cradle both the front and back of your body are popular for this reason.
Normal Discomfort vs. Warning Signs
Most pregnancy joint pain is a predictable consequence of hormonal and mechanical changes, and it resolves after delivery (or within a few months postpartum as relaxin levels drop). But certain patterns deserve prompt attention.
Sudden swelling in your hands or face, as opposed to the gradual ankle puffiness most pregnant women experience, can be a sign of preeclampsia. This is especially true if it comes with severe headaches, vision changes like blurriness or light sensitivity, pain under your ribs on the right side, or shortness of breath. These symptoms warrant immediate medical evaluation. Because headaches, nausea, and general aches are all common in normal pregnancies, it can be hard to distinguish routine discomfort from something serious, particularly in a first pregnancy. If swelling appears suddenly or is accompanied by any of those other symptoms, don’t wait.
Joint pain that is severe enough to prevent you from walking, that comes with significant redness or heat over a joint, or that affects a single joint dramatically more than others is also worth reporting. These patterns are less consistent with the diffuse, bilateral discomfort that relaxin and weight gain produce, and may point to something else entirely.