boy or girl? using the nub theory

Alexus
My little nugget at 12 weeks exactly. i am now 13 weeks as of today.. Hubby is rooting for another boy but i'm rooting for a girl😊 i was trying to figure out how to do the nub theory i was wondering if any of you wonderful ladies can help me out😊😭 what do you guys think?? boy or girl?? or to soon?.