I found out at 15 weeks but I went to a 3D place my doctor didn't verify till I was 20 weeks . I'm sure they can tell you if you ask
I will be finding the gender out when I am 15 weeks.
I found out at 18 weeks but it helped that he's a boy, parts being easier to see and such
I found out at 10 weeks that I am having a boy.
And I also go back every 2 weeks because of a hemmorhage
I found out at 19 weeks but like the above said, it was a lot easier to tell because I'm having a boy and his parts are much more noticeable.