At 37 weeks pregnant, it is not possible to accurately determine the gender of a baby based solely on the fetal heart rate. The commonly believed myth that a higher or lower heart rate indicates the gender is not supported by scientific evidence. Fetal heart rates can vary throughout pregnancy and are influenced by various factors such as activity level, maternal stress, and gestational age. The only reliable method for determining the gender of a baby is through medical procedures such as ultrasound or genetic testing.