Ha congrats!!! I am almost certain thats a girl and I know your not trying to get to excited because your a momma of boys like myself so I get it, but that looks extremely promising.
I'm not sure which bit is the nub, but if it's the bit I'm looking at then it looks to be pointing up a bit, which would mean boy.
I'm really not sure though. Are you going to find out?
x
At 12 weeks boys are really obvious there nub is completely angled with a bulb on the end. Your babies nub is more forked at the end and parallel to the spine. I would post this on in-gender to soo what you get