1st Ultrasound picture

Summer

I finally got my first ultrasound done and the heart rate is 162 bpm and baby is happy and healthy. Keep in mind that my app says I’m 8weeks and 5 days pregnant. The doctor couldn’t tell me how far along I actually am cause baby is still super small but they said I’d for sure be told next ultrasound. Any guesses on the gender by the heart rate of moms that already have kids.