What week did you find out the gender by ultrasound?

Staci

So I will be 15w5d when I have my next ultrasound and I am trying to figure out if they will be able to tell the gender. I was unable to do the testing so I am solely relying on the ultrasound. ( the genetic testing was not covered by my insurance and cost ALOT). So how early did you find out by ultrasound and was it correct?