Gender Reveal By Accident?

I had my 20 week scan and my tech was awesome. I could tell she was super experienced and I told her I didn’t want to know the sex. When she went to show me baby, it really looked like the wand was on the “potty shot” and she was looking away from the screen. If it was the potty shot, I really felt like I saw three lines. She also easily showed me all of the parts of baby which also made me think it was a girl because it didn’t feel like she was avoiding things. What are the chances do you think that I would accidentally see the sex of the baby quickly on a scan?!