Ultrasound picture @ 13 weeks 3 days. Gender guesses? Nub theory?

Hello. Just wondering if any one sees any clues in this ultrasound photo for baby gender. Thanks in advance.

http://origin.agoramedia.com/groups/...1639336666.jpg

not sure on this one, sorry.

Not super sure but leaning girl

Girl x

can't see much but I'm also leaning girl

I'm thinking girl

No nub in this pic.

im not sure

Can't see the nub...

Girl lean

Thanks for the responses! Any more guesses? I seem to think girl as well. I am not sure if that is a nub I see at the base of the spine or the beginning of the leg...what makes you all lean girl? head shape?