Groin pain can occur during pregnancy, but it’s not one of the earliest or most reliable signs. The classic early indicators, like a missed period, nausea, breast tenderness, and fatigue, tend to show up well before groin discomfort does. Most pregnancy-related groin pain begins between weeks 14 and 30, once the uterus has grown enough to strain the surrounding ligaments and joints. That said, hormonal changes that begin in the first trimester can set the stage for pelvic discomfort earlier than many people expect.
Why Pregnancy Causes Groin Pain
Two rope-like bands called the round ligaments connect your uterus to your lower abdominal wall, passing through the groin on each side. Each one is about 10 to 12 centimeters long. As the uterus expands, these ligaments stretch and widen to support it, creating tension that can ache or produce sharp, sudden twinges, especially when you move quickly, cough, or change position.
Hormones play a role too. Your ovaries and eventually the placenta produce a hormone called relaxin, which loosens muscles, joints, and ligaments so your body can accommodate a growing baby. Relaxin levels rise through the first 12 weeks and stay elevated throughout pregnancy. This loosening effect is concentrated around the pelvis, back, and abdomen, which means the joints and soft tissues in your groin area become less stable and more prone to discomfort even before the uterus has grown significantly.
When Groin Pain Typically Starts
Round ligament pain is most common in the second trimester, roughly weeks 14 through 27, when the uterus is expanding rapidly. Some people notice mild pulling or aching in the groin earlier, particularly if relaxin levels are already affecting pelvic stability, but this is less common in the very first weeks of pregnancy. Research on pelvic girdle pain confirms that onset usually falls between 14 and 30 weeks of gestation, though a subset of women report symptoms before week 20.
If you’re only a few weeks along and experiencing groin pain, it’s worth considering other explanations before attributing it to pregnancy. A pulled muscle, a urinary tract infection, or an ovarian cyst can all produce similar sensations in the groin area. Groin pain alone, without other early pregnancy symptoms, is not a strong indicator that you’re pregnant.
How Common Pelvic and Groin Pain Is in Pregnancy
Pelvic girdle pain, the broader category that includes groin discomfort, is remarkably common. Studies in Western countries report prevalence rates ranging from about 14% to 42% of pregnant women, with an average across 28 studies landing around 45%. Roughly one-third to one-half of pregnant women report some form of pelvic girdle pain before 20 weeks, and that number climbs to 60 to 70% in late pregnancy. So while it may not be an early sign that tips you off to a pregnancy, it’s something the majority of pregnant people will deal with at some point.
What Normal Pregnancy Groin Pain Feels Like
Round ligament pain tends to be sharp and sudden, triggered by quick movements like standing up from a chair, rolling over in bed, laughing, or sneezing. It usually hits one side of the groin, though it can occur on both. The pain typically lasts only a few seconds to a few minutes and then fades. Between episodes, you might feel a dull, persistent ache on one or both sides of your lower abdomen.
The key feature is that it’s movement-related and brief. It doesn’t come with fever, bleeding, or a constant escalating pain. If the discomfort follows that pattern and you’re in your second trimester or beyond, round ligament pain is the most likely explanation.
Other Causes of Groin Pain During Pregnancy
Not all groin pain in pregnancy comes from stretching ligaments. A few other possibilities are worth knowing about.
Urinary tract infections are more common during pregnancy and can cause pain in the pelvic region alongside burning during urination, cloudy or strong-smelling urine, and an urgent need to pee. UTIs don’t typically cause groin pain specifically, but the general pelvic discomfort can overlap. If the infection spreads to the kidneys, you may develop fever, back pain, chills, or vomiting.
Inguinal hernias can develop or worsen during pregnancy as rising abdominal pressure pushes tissue through a weak spot in the groin. These present as a tender, reducible swelling in the groin that may become more noticeable when you cough or strain. Varicose veins along the round ligament can mimic the appearance of a hernia, sometimes showing up alongside varicose veins in the vulva or legs.
Ectopic pregnancy, where a fertilized egg implants outside the uterus, is a more serious possibility in the very early weeks. It typically causes abdominal pain (often on one side), vaginal bleeding, and sometimes shoulder pain or dizziness. This is a medical emergency. If you have sharp, persistent pain in your lower abdomen or groin in the first trimester along with bleeding or lightheadedness, seek care immediately.
Exercises That Help Relieve Groin Pain
Gentle movement can reduce pelvic and groin discomfort during pregnancy. A few physical therapy techniques are well-suited to home practice:
- Cat-cow stretches: On your hands and knees, alternate between arching your back (tucking your head and belly inward) and rounding it toward the floor (lifting your head). Hold each position for a few seconds. This mobilizes the pelvis and relieves tension through the ligaments.
- Seated pelvic tilts: Sitting on a chair or exercise ball with your hips level with or higher than your knees, tilt your pelvis forward and then backward, holding each position for about five seconds. Rocking gently side to side also helps.
- Leg wall press: Lying on your side with a pillow between your knees, place your top foot against a wall and press your heel into it for 5 to 10 seconds. Repeat five times, then switch sides. This strengthens the muscles that stabilize the pelvis.
- Static knee presses: Sitting with your knees slightly apart, place your fists between your knees and press inward for 10 seconds. Then place your hands on the outside of your knees and press outward against the resistance. Repeat up to three times each direction.
Slowing down transitions, like standing up gradually instead of jumping to your feet, also makes a noticeable difference. Many people find that supporting their belly with a pillow while sleeping on their side reduces nighttime groin pain as the pregnancy progresses.
When Groin Pain Needs Attention
Groin pain that lasts only seconds and is triggered by movement is almost always benign during pregnancy. But certain patterns suggest something more serious. Pain that is constant and worsening rather than coming and going, pain accompanied by vaginal bleeding, fever, chills, or pain so severe you can’t walk or change position warrants prompt evaluation. In very early pregnancy, one-sided groin or abdominal pain with bleeding raises concern for ectopic pregnancy, which requires immediate treatment. Severe, sudden groin pain in the third trimester can occasionally indicate a temporary bone-density condition affecting the hip, though this is rare.