can anyone do that early gender thing from looking at the placenta? I researched it and theres two…

can anyone do that early gender thing from looking at the placenta? I researched it and theres two ways to tell and I dont see either with my baby so im confused. I dont see the placenta or what side its on . the other guessing game was "penis angle" if any one heard of that the "tube" that makes the family jewels points up for a boy and flat for a girl. my 12 week scan . im 14 weeks now.