No nub at 13 weeks?

Hi everyone! I had my ultrasound at 13 weeks and 2 days and just picked up my results today.
Now I'm no nub expert but after reviewing the images I can't seem to find the nub.
I'm not sure if I'm looking correctly so I've come here to ask for help.
Can anyone see anything? Opinions?

Here is a link to the album of images (much easier)
http://imgur.com/a/pIcZK

Thank you! :)

Girl

Last image very clearly girly :)

Girly.

I'm leaning girl, too.

I can't zoom in on them on my phone :( think can see nuns but not 100% I like to zoom in to see for sure sorry x


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UPDATE:

Just had my anatomy scan and... IT'S A BOY!! :DS: I am in disbelief but absolutely thrilled. We desperately wanted a boy!

Congratulations great news :) just goes to show, we should never give up!!

Huge congrats! :celebrate::xy:

Definitely! Never ever give up :)