Gender scan at 13.5?

Sarah • Mommy to Emmie Lou 💜. Nora Rose due May 30💗. Army wife. Working Mama.

I was going to do a gender scan at 15 weeks (my OB won’t do one until at least 20 and we wanted to know before Christmas). We will be traveling to visit family for Thanksgiving so I thought it would be neat if we could do a scan while visiting and everyone could be part of it. My question is, how reliable is a gender scan at 13.5 weeks?