If you are 15 weeks pregnant and your stomach hurts all the time but there is no bleeding, you may have physiological abdominal pain, which is related to the stimulation of the nerves of the abdominal wall; and pathological abdominal pain, such as acute gastroenteritis. 1. Physiological abdominal pain: if the pregnant woman’s abdominal pain is not strong, does not last long, and there is no bleeding, it is possible that the uterus is increasing in size causing the pelvic bones to be compressed, leading to the extrusion of abdominal organs, causing the abdominal wall nerves to be stimulated and caused by a normal physiological phenomenon, which does not require special treatment. 2. Pathological abdominal pain: such as acute gastroenteritis, acute pancreatitis, intestinal obstruction, urinary system diseases, uterine fibroids and ovarian cyst torsion or ovarian cyst rupture, etc., may also be due to the contractions of the pre-miscarriage of the abdominal pain. When the above symptoms occur, pregnant women are advised to go to regular hospitals for further examination, and specialists will decide whether treatment is needed.