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

[Dsimpson1245]

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

http://origin.agoramedia.com/groups/avatars/BuddyIcon_1357308496_1639336666.jpg

[Inky]

not sure on this one, sorry.

[Sierra1410]

Not super sure but leaning girl

[sugar]

Girl x

[snowy]

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

[EODwife363]

I'm thinking girl

[lovemy4]

No nub in this pic.

[Cinss]

im not sure

[The Anchor]

Can't see the nub...

[3boys]

Girl lean

[Dsimpson1245]

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?