I forgot. What week of pregnancy do you find out the gender?

Usually at the anatomy scan. Between 18-20 weeks.

I found out at 20 weeks

I found out at 14 weeks but I paid someone for a 3D/4D ultrasound

I found out at 20 weeks

I was 20 weeks

Anatomy scan is standard practice for my clinic. So 20 ish weeks. We paid for an elective ultrasound at 16 weeks with our daughter though, just so my husband could actually make it.