Nub Test?

Kearra • I'm pregnant with my first baby , im excited , nervous, anxious and everything in between. MAY 31,2016 - can't wait to meet my little one !
Does anyone know how to do the nub test? At 6 weeks I did the Ramzi Theory and it said girl ! - I am now 10 weeks 3days . the babys heartrate is at 165 :)