skull theory?

I was told unofficially I was having a girl 3 weeks ago (I volunteered to participate in training nurses) yesterday at my anatomy scan the tech said she thought she saw a glimpse of boy parts but was unable to get a good view due to toes, fingers and umbilical cord in the way. My ob looked during my appointment same issue tight she saw boy but then thought she saw girl. Baby is a mover lol. I gotta wait 4 wks till we get to try and see again. So till then what do you think?