feeling frustrated

Quela
So I'm 18 weeks and we are still not sure if it's a girl or a boy. My dr said she thinks it's a boy at my 14 week ultrasound and then again at my 18 week appt today. But I've had 3 boys and 1 girl already so I know what boy parts look like and I didn't see that last time and this time I thought I saw girl parts for a sec and then I thought I saw boy parts. The ultrasound pics she gets are terrible and never any of the parts that she thinks she sees just side profile. So again I wait till my 22 week ultrasound to find out finally for certain what this baby is! Hopefully sheesh!