Girl or boy...?

I had an ultrasound at 15 weeks and was sent home with pics. The tech said she thought it was a boy but wouldn't say 100%. I showed my friend who is also a tech and she said what we are seeing in the background is the cord?? And that the "hamburger" is in front of the cord. Does this look right or should I continue to believe it's a boy...? 
(Without drawing). 

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