When was your anatomy scan?

Kayla • Baby #1 due September 2019🤰🏼🍼💙

I am currently 13 weeks, and my next appointment is next week. I’m going every 4 weeks so that would put my next one at 18 weeks. Do you think they would they do my anatomy scan and we can find out the gender then? Or is that too early since they call it the “20 week scan”?