Round ligament pain is caused by the stretching of ligaments that support the uterus as it grows, and it’s most common during the second trimester, often felt as a sharp or pulling pain in the lower abdomen or groin when moving, standing, or changing positions. Simple remedies include rest, slow movements, gentle stretching, warm compresses, and using a pregnancy support belt to reduce strain. While this pain is usually harmless, you should consult a doctor if it becomes severe, persistent, accompanied by fever, bleeding, contractions, or pain during urination, as these could indicate other conditions that need medical attention.