Gender confusion

London
So I went to get a ultrasound done just to see how far along I am and to make sure the baby was inside the uterus, I was told that the tech's aren't trained to determine genders but the tech told me we could take a look at the area where gender could be seen she said that if there are 3 horizontal lines them it's suppose to be a girl and that if it looks like a turtle neck then it's a boy well the baby kept moving and at first we didn't see anything and guessed it might be a girl then as the baby kept moving it we started to see a little bumb I KNOW YOU LADIES ARE'NT professionals but I want to here your  predictions I'm going to have another ultrasound done later. Here is the picture.