Need help!!

If the tech says "I think its a girl" would you trust it? She didnt seem convinced at all but we told her my gender reveal is tomorrow so I am scared she was just guessing.. Baby was not coopersting at all and I even used the bathroom to empty my bladder and it didnt help much! I'm so nervous to reveal girl and it end up being a boy!! Anyone have anything similar happen? I'm 20 weeks today! She also didnt print any pictures of the gender.