Elective u/s at 15 tech said boy but I'm not too confident

Casy
The place where I had it done the ad said they don't do then until 16 weeks but I told her I was about to be 15 and she still booked me, so day of u/s I was 15 wks and she said it was a boy. I have 4 other boys and their ultrasounds looked way different so I'm just confused! I go for my anatomy at the end of the month. Any ideas to if she's correct? 
This is the first ^ and on bottom one I don't see any boy parts?