Really a boy?!

I went at exactly 15 weeks to find out what I was having to a private ultrasound office and we had trouble for the first ten mins seeing what baby was but eventually saw what we thought was boy parts but this is one of the images and she said it would light up if it was the cord and as you can see its lit up right under it so not very confident. What do y'all think? Some images it looks very obvious but could it still be the cord?