20 Week Scan Gender

[JoBlake]

Hi ! I’m after some advice. I had my 20 week scan a few days ago. We wanted to find out the sex, the midwife initially told us it was a girl, then 5 minutes later told us she TUI ks it’s a boy. On my pregnancy notes it says “Likely Male” .. is this normal ? Should I pay for a private scan to double check ? Thanks in advance !