Nub Theory

Bryana
I had my 12 week ultra sound today. Baby is measuring at 12w2d so nervous and excited I have 2 girls already and had my baby last year at 22weeks that was a girl too she didn't make it tho 😔 so now I'm 12w and so nervous now but here's a pic of my rainbow baby the arrows are pointing to the Nub.....  I don't know what to think boy girl?