Boys or girls

Stacey
For those that are finding out the sex of baby, I wanted to see if the old wives tail of where the baby sits in the scan photo and also the heart rate play a roll.
So they say babies that lay to the left of a scan are boys and to the right are girls .
And heart rates of over 140 are girls 
I'm asking if a few of you that know the gender can check a scan from 8wks then when you found out the sex and see if any of this is true