At just 5 weeks and 4 days, it is too early to determine the gender of your baby based on the fetal heartbeat. The average fetal heart rate ranges between 120-160 beats per minute (BPM) during this stage of pregnancy, regardless of gender. Gender determination is typically done through ultrasound or genetic testing later in pregnancy. While some old wives' tales suggest that a higher or lower heart rate may indicate a specific gender, there is no scientific evidence to support these claims. It's best to wait for further testing or an ultrasound scan for accurate gender determination.