The most accurate sign of having a girl Pregnancy is a happy thing for every expectant mother, and wanting to know the gender of the baby is even more exciting. Although modern medical technology can provide certain guidance, many people still like to speculate on the gender of their baby through some folklore. The following will introduce the most accurate signs of being pregnant with a girl to help expectant mothers predict the gender of their baby. 1. Physical reactions during pregnancy: In the early stages of pregnancy, many expectant mothers will experience various physical reactions, such as nausea, vomiting, headaches, and dizziness.