So relieved! Any Nub theory experts out there?

Ruthy
Just had my 12 week scan. At this point last time, we found out our little baby had an obstructed bladder (1/4000 chance of happening) which ended being fatal. You can imagine how relieved we were to see a health baby with a normal bladder. So thankful for this little miracle.
P.s does the fork nub mean it could be a girl? I know it's not accurate but like to guess anyway :)