I'm getting mine done at Ultrasona on the 6th, i'm 14 weeks now but I decided to wait, cause you'll be able to see" it" (not baby but the sex lol) better lol
They told me to not come until after 14 weeks, then they have some "guidelines"
~That if they don't know the sex to come back free of charge the folowing week
~If the sex is wrong they will give me my money back
So I guess even if they are wrong I still will have piece of mind and get my money back.