Belly button flatie or outie

Rinz ftm • 28, FTM, Due Date 28th June 2016 Baby Born on 13th July 2016

Hello Momma's

People around me say that the belly button has to be a flatie for the labour to start, like there is no space for ur finger.

Is it true?? and how many of you had an innie and still went on with spontaneous labour

How many days does it take to become a flatie and I am due tomorrow