B\G twins, but unsure about the girl.

Carly

Yesterday we had an elective ultrasound to reveal our twin's genders at 16 weeks. We were told we had a boy and a girl. The boy was undoubtedly a boy for all our eyes, but the girl gave us a little more trouble.

She was positioned with the cord in the way a lot of the time. The tech searched for the perfect angle for about 20 minutes. The first pic she claimed girl, but I don't see the three lines. So that's why I'm confused. She kept looking and finally said, "ah-ha! That's what I thought!" when she saw the second ultrasound I attached. To be honest I can't even tell what I'm looking at in that one! Haha. Could it be the three lines??

We want to surprise our families for Christmas, but I'm worried it just isn't accurate. She seemed pretty sure of herself and told us that she had been doing this for 35 years, but I still don't know what to think. Anyone have any input?!