First time mom, gender?👶🏻👧🏻

Ju

Hi everyone I’m a first time mom and just had my second ultra sound yesterday, I’m so excited to know the sex but have no clue how to tell and I have been reading a lot here about different theories.

Could anyone guess at all?

I’m 13 weeks , and heart beat 152

please help lol😬🤔🤗👶🏻👧🏻