Tech Unsure of Gender....any guesses?

My husband decided to join me for the gender scan, because he wanted to know FIRST what we are having. Throughout the scan, baby kept moving those legs up and down. Not to mention that baby is in breech position at the moment, and measuring 21w2. So the tech tried a transvaginal to see if that would make a difference. We got a view, tech said it’s a girl but he is unsure. He wants us to come back at 28weeks to get a better look. Any guesses?o