I found out at week 12! :)
After 15 weeks. But little later is better. I did anatomy checkup n sex determination at 20 weeks
They can actually tell u as early as 9 weeks with a blood test called panorama.
I was like eleven weeks when I was told. With genital area swollen at that early stage I did not believe them until the twenty week ultrasound.
They say it's gud to find out between 18 and 20 weeks.. but some have found out at 14 n 15 weeks but the private parts are still a little swollen....