Do we have any ultrasound techs on here?

Kandi • Mom to 3 beautiful girls. Expecting august 2020

I would love some insite from someone who is experienced in ultrasound. I got a guess of ramzi and nub both said boy. Went at 16wk 6 days for gender ultrasound and baby was stubborn and had back to us and ankles crossed. I have multiple pic that she printed and from video multiple that looks boy to me and then one that could be girl I think. The one that could be girl the tech said baby was a girl on and we ask how sure she said pretty sure. I have 3 girls and it doesnt look like any of my other girls. Tech was also rushing so she could get to lunch and said she was trying to get a glimpse in between legs as baby wasnt very active.. we had a gender reveal schedule for the 21st but I dont go back to confirm until the 26th so I've postponed it but would still like to know what everyone thinks based on the pics I got. Also all my girls had heartrate for 160-180 and this baby has not got over 148 the 5 times the heartrate has been checked