White spot in 19 week ultrasound?

Megan • Military wife🇺🇸 🐱🐱🐱🐶🌈 👶🏻💖👨‍👩‍👧 born Sept 2019. Living in LA currently.

I went for a 19 week ultrasound at a place in the mall to find out the gender. We are having a girl! When I got home, I noticed this white spot on the ultrasound. Does anyone have any idea what it could be?