My sister had an ultra sound done at 15 weeks and 3 days and the technician said she could clearly see that they were having a girl. They announced it to all of our family, friends, and posted online because the technician told them it was very obviously a girl. A week and a half later the sonographer at their OB tells them they are definitely having a boy, and in the photos you can clearly see the baby has boy parts.
My brother in law called to ask for a reshoot (not a refund) and the owner, Amber, was rude and would not offer another full ultrasound (would only offer 10 minutes or half off). If you're looking to find out your babies gender, this is not the place for you!