Sharp belly pain while pregnant is one of the most common reasons expecting moms call their provider, and most of the time it has a simple, harmless explanation. This guide, written from an OB/GYN's clinical perspective, walks through the difference between normal stretching and cramping versus pain that needs medical attention, including sharp lower abdominal pain during pregnancy caused by round ligament pain, pelvic girdle pain, and more, plus practical relief strategies for the discomfort in between.