Gender mixup???!!!

Hi everyone! I am 16 weeks and a few days. Went to my checkup yesterday. They did an ultrasound to determine the baby's gender. I had the tech put the gender in an envelope since hubby couldn't make this appt, but of course when I got in the room with my ob-gyn we just HAD to take a look at the ultrasound pics and he pointed out what he determined was a boy. So, I pretended I didn't know what the baby was when my husband and I opened the envelope. So, you can imagine my shock and surprise when inside the envelope it said it was a girl. I'm going back to doc today for clarification, but can ya'll take a look at the pics below and help me determine?