Girl, right??

My husband is 100% set on not finding out our baby's sex. The US tech was really good about scanning that area very quickly so we didn't catch a good  glimpse, but then she also printed this pic for us, which to me looks totally like a girl (since it's missing a very obvious boy part). Now I'm going crazy!
This is our first child so I have nothing to compare it to. Is this definitely a girl, or is there a chance it could maybe be a boy who's just being shy??