Is there a nub visible on this?

[LRBB17]

If I'm perfectly honest I'm not sure what I'm looking for! This is my first baby so not sure what to look for!!

[URL=s41.photobucket.com/user/kalyz/media/C6560C4B-B0D4-45DD-8870-D4C2CF3E94CD_zpsluqxjv9r.jpg.html][IMG]i41.photobucket.com/albums/e273/kalyz/C6560C4B-B0D4-45DD-8870-D4C2CF3E94CD_zpsluqxjv9r.jpg[/IMG][/URL]

flic.kr/p/QvkHDY

Sorry last link didn't work this one does x

Not a great angle, if pushed to guess i'd say boy but that is just a guess

A younger scan of 10 weeks I think he/she is in a better position?
flic.kr/p/QJtcJg

Sorry two more just really intrigued and so excited xx
flic.kr/p/QasNfA
flic.kr/p/QJtNSc

I don't see a nub sorry. And 10 weeks too early for nub theory on the later pictures.