Gender Test

Alyssa • A Corrections Officer and Dispatcher, I am happily with my fiance, soon to be husband. We miscarried November 5th, 2015 with our 1st, I am pregnant...again! Hoping this one makes it. I'm very excited!
Has anyone ever did any of those crazy tests earlier than the 17-20 weeks of finding out what the baby gender is and was it right? I'm 12 weeks today and I'm seriously so impatient lol!