Pregnant women experiencing pain in the right rib cage has nothing to do with the sex of the child and cannot determine whether it is a boy or a girl. If there is a history of trauma, you need to go to the hospital and be checked for rib cartilage injuries or rib fractures. If there is no history of trauma, it could be intercostal neuritis, and you can choose to take safer pain medication during pregnancy. If the pain is on the lower edge of the ribs on the right side, an ultrasound is needed to check if there is liver or gallbladder disease. If the ultrasound reveals any abnormalities in the liver, fasting blood can be drawn to check the liver function. The sex of the fetus will not cause pain or lack of pain in the ribs. During pregnancy if there is discomfort, it is best to go to the hospital for timely examination and symptomatic treatment.